how can we save endangered animals?

50 i think

Explanation:

be cause a right angle is 90 so if the acute angle is smaller it should be a smaller number but its hard to say without an image to help us out

The percentage of geologic time does the fossil record represent 20%.

Fossils refers to remnants or traces once-living thing from the past. Examples include bones, shells, exoskeletons, stone imprints of animals or microbes, objects preserved in amber, hair, petrified wood, oil, coal, and DNA remnants.

Fossil record is the compilation of all known and unknown fossils over a period of time.

The importance of fossil records includes:

1) Fossil records give scientists clues as to what the Earth was like millions of years ago.

2) Fossil records are used to determine how organisms alive today evolved.

3) It helps to understand how life in has changed over time.

Thus, percentage of geologic time does the fossil record represent 20%.

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The reflexes involving painful stimuli, such as touching hot objects or stepping on sharp objects, are examples of withdrawal reflexes, which is present in the last option. The last option is true regarding the reflex.

There are many different types of reflexes, such as the withdrawal reflex, stretch reflex, and so on. In the withdrawal reflex, limbs such as the hand and leg are withdrawn in response to a stimulus such as hot, cold, stepping on sharp objects, and so on.

Hence, the reflexes involving painful stimuli, such as touching hot objects or stepping on sharp objects, are examples of withdrawal reflexes.

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when powered coal is heated, it undergoes thermal decomposition to form carbon monoxide and hydrogen gas as products A and B respectively. These gases have various industrial applications and are important feedstocks for chemical synthesis.

The picture shows that powered coal is being heated. This is a form of thermal decomposition reaction in which coal breaks down into simpler molecules due to the application of heat. The products formed as A and B are carbon monoxide and hydrogen gas respectively.
Carbon monoxide (CO) is a colorless, odorless gas that is toxic when inhaled. It is formed when carbon-containing substances are burned with insufficient oxygen. Carbon monoxide is used as a reducing agent in metallurgy, as a fuel gas, and as a feedstock for chemical synthesis.
Hydrogen gas (H2) is a colorless, odorless gas that is highly flammable. It is used as a fuel and as a feedstock for the production of ammonia, methanol, and other chemicals. Hydrogen gas can also be used as a reducing agent in metallurgy.

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The production plan for seasonal products is developed from a charted "product demand cycle" that tracks the best plants to sell at different times of the year.

This cycle takes into account the natural growth cycles of different plants, as well as consumer demand for those plants during certain seasons. By following the seasonal cycle, growers can ensure that they are producing the right plants at the right time, maximizing their profits and reducing waste. This approach also helps ensure a steady supply of fresh, high-quality products throughout the year, which is important for maintaining customer satisfaction and building a loyal customer base.

A product demand cycle is a chart that shows the expected demand for a product over the course of the year. The cycle helps businesses to plan their production schedule to ensure that they have enough supply to meet demand during peak seasons. For example, businesses can use the demand cycle to determine when to plant certain types of flowers or plants so that they will be ready for sale during peak seasons.

Overall, the product demand cycle is a crucial tool for businesses to plan their production schedule, manage their inventory levels, and maximize their sales during peak seasons.

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From an evolutionary perspective, it would be most difficult to explain why some humans have a heightened sense of spirituality.

The term "evolution" refers to the process by which organisms change over time as a result of changes in their genetic or heritable traits. It is one of the fundamental processes in biology, and it has had a significant impact on the way scientists understand the natural world.

Evolutionary perspective is a theoretical framework that emphasizes the importance of biological processes and genetic inheritance in shaping human behavior and development. This perspective suggests that human behavior and characteristics can be better understood by examining them from an evolutionary perspective. This approach helps us understand why some traits have evolved while others have not.

From an evolutionary perspective, it would be most difficult to explain why some humans have a heightened sense of spirituality. There is no consensus on why spirituality evolved, or whether it has any adaptive value.

Some researchers have proposed that spirituality may be an adaptation that helps individuals cope with stress and uncertainty, while others have argued that it is a byproduct of other evolved traits, such as the ability to imagine future events.

Regardless, the difficulty in explaining spirituality from an evolutionary perspective lies in the fact that it is not a universally present trait, nor is it easily quantifiable or measurable in the same way that other traits are.

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Answer: No atoms can be created and no atoms can be destroyed.

(don't know if thats what you were looking for)

Explanation:

The cell cycle consists of several distinct phases, each with specific events and processes. The phases of the cell cycle are; Interphase, and Mitotic (M) Phase.

Interphase;

G1 Phase (Gap 1): In this phase, the cell grows, synthesizes proteins, and carries out its normal functions. It prepares for DNA replication.

S Phase (Synthesis); DNA replication occurs during this phase, resulting in the duplication of the genetic material. Each chromosome is replicated, resulting in sister chromatids held together by a centromere.

G2 Phase (Gap 2); The cell continues to grow and prepares for cell division. During this phase, the cell synthesizes additional proteins and organelles.

Mitotic (M) Phase;

Prophase; Chromatin condenses and coils to form visible chromosomes. The nuclear membrane are disassembles, and the mitotic spindle starts to form.

Prometaphase; The nuclear envelope completely breaks down, and the mitotic spindle fibers attach to the kinetochores on the chromosomes.

Metaphase; The chromosomes align along the equatorial plane of the cell, known as the metaphase plate. The spindle fibers ensure proper alignment.

Anaphase; The sister chromatids separate and are pulled toward opposite poles of the cell by the shortening of the spindle fibers.

Telophase; The chromosomes reach the opposite poles, and a new nuclear envelope forms around each set of chromosomes. The chromosomes start to decondense.

Cytokinesis; This is the final step of cell division. The cytoplasm divides, and two daughter cells were formed. In animal cells, a cleavage furrow forms and deepens, eventually leading to the separation of the cells.

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The natural resources that maintain humans results in decreases the amount of resources. The correct option is b.

Natural resources are resources derived from nature and used with minimal modification. This includes commercial and industrial use, aesthetic value, scientific interest, and cultural value.

The environmental impact of so many people is manifested in two ways: consumption of resources such as land, food, water, air, fossil fuels, and minerals.

Consumption waste products include air and water pollutants, toxic materials, and greenhouse gases.

Thus, the correct option is b.

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According to the 10% law of the ecosystem, human will have 30 Joules of energy out of 3000 joules from apple. Thus option B is correct.

In the food chain, at each trophic level, 90% of the energy from food is used up in metabolism or released as heat while only 10% is transferred to the next trophic level.

So 10% of 3000 joules of energy from an apple will be transferred to the pig which is 300  joules and the pig will give 10% of 300 joules to the human which is 30 Joules. So option B is correct.

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Xylem and phloem are two distinct types of vascular tissues in plants with different structures and functions.

Structures: Xylem contains tracheids and vessel elements, which are elongated cells with thickened cell walls. These cells are dead at maturity and form long interconnected tubes.

Adaptations: The cell walls of tracheids and vessel elements have lignin, providing strength and support to withstand water transport under tension. They also have pits and perforations to allow for lateral movement of water.

Function: Xylem is responsible for conducting water and minerals from the roots to the rest of the plant. It creates a continuous column of water that moves through the plant due to transpiration and cohesion-adhesion forces.

Structures: Phloem consists of sieve tube elements and companion cells. Sieve tube elements are elongated cells with perforated end walls called sieve plates. Companion cells are connected to sieve tube elements and provide metabolic support.

Adaptations: The sieve tube elements have sieve pores in their sieve plates, allowing for the transport of organic molecules, such as sugars. They lack nuclei and other cellular components, making them more efficient for mass flow.

Function: Phloem transports sugars, amino acids, and other organic molecules, known as sap, from the leaves to the growing parts of the plant, including roots, flowers, and fruits. This process is called translocation.

In summary, xylem primarily transports water and minerals through hollow cells with lignified walls, while phloem transports organic molecules through specialized sieve tube elements. These distinct structures and functions in xylem and phloem contribute to the overall transport system in plants, ensuring the distribution of water, nutrients, and other vital substances to support plant growth and metabolism.

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Complete Question:

Xylem and phloem are two types of vascular tissues in plants that are responsible for transporting water, nutrients, and other substances throughout the plant. These tissues contain structures that are specifically adapted for their respective functions. Please outline the differences between the structures in xylem and phloem, highlighting their unique adaptations and roles in plant transport. Provide a comprehensive answer with complete details and explanations.

Answer:

Economic development

Explanation:

The diagram below represents a portion of an organic molecules. This molecule controls cellular activity by directing the synthesis of protein. Thus, option B is correct.

The term proteins has been defined as the base of a human. humans need them to survive because they help make fat that you’re body uses why you might be struggling to keep them (like when you are sick).

Amylase, a protein enzyme that catalyses the hydrolysis of carbohydrates and trypsin, a protein enzyme that catalyses the digestion of protein. Keratin, a protein which is found in hair, and Collagen, a protein which is found in connective tissues such as tendons and ligaments and myosin and tropomyosin.

Therefore, The diagram below represents a portion of an organic molecules. This molecule controls cellular activity by directing the synthesis of protein. Thus, option B is correct.

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Answer:

The Sun's gravitational force is like the tetherball rope, in that it constantly pulls Earth toward it. ... This means that the planet neither flies out into space nor falls into the Sun. Instead, it travels in a nearly circular motion around the Sun, creating an orbit

Working with skeletal remains can be emotionally challenging, as it involves handling human remains and dealing with the inherent sensitivity of the situation.

Distribution of bones can provide valuable information to a forensic scientist.

By analyzing the arrangement and location of skeletal remains, they can determine the manner in which a person died, identify any signs of trauma or injury, and even estimate the time since death.

The distribution of bones can also help determine if the remains have been moved or tampered with, which can be crucial in solving a crime.

When it comes to collecting skeletal remains at a crime scene, there are several challenging aspects.

One of the main challenges is locating and recovering all the scattered bones, especially if the remains are fragmented or scattered over a large area.

It requires meticulous search techniques and attention to detail.

Another challenge is ensuring that all the bones are properly documented and preserved to maintain the chain of custody and prevent contamination.

Additionally, working with skeletal remains can be emotionally challenging, as it involves handling human remains and dealing with the inherent sensitivity of the situation.

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Answer:A

Explanation:Because its a guess!

Answer:

Raise seedlings in special mat nurseries or in seedling trays.

The primary factor affecting wind speed is the pressure gradient between high and low pressure locations.

What affects the wind's velocity?

The difference in pressure between high- and low-pressure zones is known as a pressure gradient.

The pressure gradient and wind speed are intimately correlated, so as the pressure gradient (i.e., change in pressure) grows, the wind speed at that place also increases.

What influences wind speed the most?

Because the sun heats the Earth differently in different regions, creating pressure differences, wind is a result of a horizontal variation in air pressure, therefore the sun is the primary source of most winds.

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Answer: i believe its c

Explanation:

Microvilli are the structures of fingerlike projections that greatly increase the absorbing surface of the cells.

Microvilli are membrane protrusions that resemble fingers and are sustained by the actin cytoskeleton. They are present in practically all cell types. An increasing amount of research indicates that the highly curved membranes of the dynamic lymphocyte microvilli play a critical role in signal transduction that triggers immunological responses.

The examination of the process that generates curvature and its functional implications in signaling, however, was impeded by difficulties in altering local membrane curvature and tracking the high dynamicity of microvilli. Recent developments in adaptive super-resolution microscopy have helped to partially overcome these technological obstacles.

Therefore the structure that increases the absorbing surface area is called microvilli.

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Answer:

A...................

Answer:

A plateau forms when a flat block of rock is uplifted, and a fault-block mountain does not

Answer:

How is a plateau different from a fault-block mountain? A plateau forms when a flat block of rock is uplifted, and a fault-block mountain does not. ... A scientist discovers a rock that she determines to be a fault.

The diameter of a capillary tube is 2.5135m

Capillary tubes are those with very small diameters (narrow cylindrical tubes). When these small tubes are immersed in a liquid, the liquid in the capillary either rises (or lowers) relative to the surrounding liquid level. This phenomenon is known as capillary action, and such tubes are known as capillary tubes.

Rise in capillary is given by

h = \(\frac{2\times \sigma \times cos\theta}{\rho \times r\times g}\)

σ = surface tension

ρ = density of liquid

r = inner radius

h = height

θ = contact angle made by the liquid meniscus with the capillary’s surface.

Given,

h = 1.21 cm

σ = 540 × 10 N/m

θ = 140°

ρ = 13.6 × 10³ Km

Substituting the value in equation,

h = \(\frac{2\times \sigma \times cos\theta}{\rho \times r\times g}\)

r = \(\frac{2\times 540\times10\times cos140}{13.6\times10^3\times1.21\times10^-^2\times10}\)

r = 50.27 × 10⁻¹m

d = 2.5135m

The diameter of a capillary tube is 2.5135 m.

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Griffith concluded that the heat-killed bacteria somehow converted live avirulent cells to virulent cells, and he called the component of the dead S-type bacteria the “transforming principle.” Fig. 1.1. Schematic diagram of Griffith's experiment which demonstrates bacterial transformation.

Answer:

There are more protons in neutrons in a stable isotope.

Explanation:

There are more protons in a stable isotope because protons are more stable than nuetrons. Protons are lighter, while neutrons tend to be able to decay into a proton, electron to conserve charge, and an electron anti-neutrino lepton number. Because these things have a total mass that is less than the original nuetron, in the process it results in emitting energy. Overall, a proton has the lowest mass of any baryon; there is nothing left that is could possibly decay into unless the baryon number is destroyed. Which by laws and theories, seems to not be permitted. To give more information, the first two elements, hydrogen and helium, have stable isotopes where there is one less neutron than the number of protons. All of the elements do not contain a stable isotope that consists of this property.