Which of the following best describes the interaction between Earth’s crust and living organisms?a.Raw materials essential for life are cycled through Earth’s crust.
b.Fossil fuels are a valuable energy source for the biosphere.
c.The continental crust allowed the evolution of life on land.
d.The crust recycles the organic materials in sedimentary rock.

Answers

Answer 1
Answer: The best answer is A. Raw materials which are essential for life are cycled through the Earth's crust. The crust is the uppermost layer of the Earth. In this layer many types of rocks are found.  The crust is the also coined as the home of life since it has its own systems of mineral recycling which is essential for life here on earth.
Answer 2
Answer:

Answer:

The answer is A

Explanation:


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When a dairy farmer chooses to breed the cows that give the most milk in the herd, the farmers are following the principle ofa. artificial selection.
b. natural selection.
c. descent with modification.
d. acquired characteristics.

Answers

Answer: Artificial selection.

Explanation: Artificial Selection can be defined as the intentional reproduction of the individuals that have the desired trait. The organism having the desired character breed together to give rise to the individual having the desired trait.

The dairy farmer choose to breed the cows that give most milk. This is the desired character that we want in the offspring.

Well, i took the test and i put artificial selection and got it right. The definition of artificial selection is "The breeding of plants and animals to produce desirable traits" So the answer is A

Someone diagnosed with meningitis has inflamed membranes that cover and protect the brain and spinal cord. Meningitis is a result of pathogenic gram-negative bacteria that cause extreme infections when their bacterial cell wall dies and lipopolysaccharide (a lipid and polysaccharide) is released. The lipopolysaccharide is an example of a/an

Answers

Answer: ENDOTOXIN

Explanation: Meningitis is a nervous system disorder that occurs when there is an infection and inflammation of the meninges,these meninges are the membranes that cover the brain and the spinal cord,they are the pia mater, dura mater,and the arachnoid mater.

This infection and inflammation of the meninges is causes by inversion of microorganism, bacteria precisely,when these bacteria that are gram negative invade the meninges,the cell wall of the bacteria dies off exposing the cellular contents, this exposure introduces a toxin known as LIPOPOLYSACCHARIDE directly in to the meninges which disrupts the normal functioning of the meninges, infection further sets in and inflammation is triggered as well.

Genetic variation can aid in the survival of species when the environment changes. Which of the following is the best example of an organism with a genetic variation that could improve survival chances over time? A)
An ant that is resistant to pesticide .


B)
A cactus that has no spines.



C)
A mouse that has learned to avoid mousetraps.

Answers

An example of an organism with a genetic variation that could improve survival chances over time would be an ant that is resistant to pesticides (Option A)

What is genetic variation?

Genetic variation refers to differences in the genetic material (DNA) among individuals within a species. This can arise due to several mechanisms, including mutation, recombination, and genetic drift. Genetic variation provides the basis for evolution by natural selection, as it allows for populations to adapt to changing environments and helps to ensure the survival of the species over time.

Genetic variation can also play a role in disease resistance, as some individuals may carry genetic variations that protect them from certain diseases. Additionally, genetic variation can impact physical and behavioral traits, such as eye color, height, and intelligence.

Learn more about genetic variation, here:

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Nope. A is a correct answer. A mouse simply learns how to avoid a trap, there is no genetic change responsible for that

Genetically modified foods can contain genes from different, unrelated organisms. true or false.

Answers

Answer:

True

Explanation:

Because the genetic code is universal and the DNA molecule is the same for all living organisms, an organism can be genetically modified by introducing a gene from a different organism (called a transgene).

An example of this are Bt crops. Scientists isolated from a bacteria (Bacillus thuringiensis, Bt) a gene that produces a toxic protein that kills insects. Then, they modified crops such as cotton and corn by inserting this gene, and plants that express it can resist being eaten by insects (because when insects try to eat them they die due to the toxin).

This is true, cuz this food is modified inGENETIC

The lens system within a camera forms a _______ on the sensor.A. real, upright image
B. real, inverted image
C. virtual, upright image
D. virtual, inverted image

Answers

The lens system within a camera forms a virtual, inverted image on the sensor. The correct option among all the options that are given in the question is the last option or option "D". Most of the modern cameras that we find today have been derived from a simple camera known as pinhole camera.

I believe the answer is B. But not to sure.

A boy jumps into a cold swimming pool and his body temperature goes down. His muscles, blood vessels, and nervous system work together to restore his body temperature. Which term best describes this process?A. homeostasis
B. hypothermia
C. reflex
D. respiration

Answers

The term best describes this process is homeostasis.

What is homeostasis?

A self-regulating process by which an organism maintains a constant internal environment of their body is known as homeostasis.

What all are maintained during homeostasis?

The variables that are maintained during homeostasis are:

  • body temperature,
  • fluid,
  • blood pH,
  • and oxygen tension.

What can disrupt homeostasis?

The substances that can disrupt homeostasis are:

  • Disease
  • Toxins
  • Pathogens

To learn more about homeostasis,toxins and temperature here,

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the answer would be homeostasis, which is the name of the process by which human bodies regulate their temperature. in the previous answer, respiration is just breathing