How people depends on ecosystem

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Answer 1

Answer: We depend completely on nature for essential, life-sustaining services – clean air and water, a stable climate, food – yet our activities are having an increasingly dramatic and detrimental effect on wildlife and ecosystems, putting not just wild species but also our own survival at risk

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Most animals reproduce sexually by producing
What does the continued presence of vestigial structures like the whale pelvis and femur shown in Figure 16-1 suggest about the impact vestigial structures have on fitness?
9. List the steps of cellular respiration in order
Which of the following statements accurately describes the process of dating Earth's history?a. Scientists use radiometric dating to determine the relative age of a new fossil.b. Scientists use relative dating to determine the absolute age of a new fossil.c. Scientists use radioactive isotopes to determine the absolute age of a new fossil.d. Scientists use index fossils to determine the specific years of age of a new fossil.

Which of the following provides an example of epistasis? A) Recessive genotypes for each of two genes (aabb) results in an albino corn snake.
B) The allele b17 produces a dominant phenotype, although b1 through b16 do not.
C) In rabbits and many other mammals, one genotype (cc) prevents any fur color from developing.
D) In Drosophila (fruit flies), white eyes can be due to an X-linked gene or to a combination of other genes.
E) In cacti, there are several genes for the type of spines.

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D) In Drosophila (fruit flies), white eyes can be due to an X-linked gene or to a combination of other genes.

Epistasis is the communication and the interaction of the genes. These are not within the alleles but with the genes themselves only. Also known as the genetic background, the genes are dependent on their effect to show the trait.

Answer: c) in rabbits and many other mammals, one genotype (cc) prevents any fur color from developing

Explanation: idk i just got the answer wrong and it said that was correct lol

In the context of the difference threshold, _____ is the principle that two stimuli must differ by a constant proportion to be perceived as different.

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Answer:

The answer is Weber's law

Explanation:

In the context of the difference threshold, Weber's law is the principle that two stimuli must differ by a constant proportion to be perceived as different.

- Weber's Law states that "for the difference to be perceptible, two stimuli must differ by a constant proportion, not a constant amount".

A gland secretes enzymes through a duct onto the surface of a body part. Which gland is it most likely to be?. . A.pituitary gland. . B.salivary gland. . C.thyroid gland

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I believe the correct answer among the choices listed above is option B. A gland secretes enzymes through a duct onto the surface of a body part is a salivary gland. It is under the classification of exocrine glands. Hope this answers the question.

Answer: Salivary Gland

Explanation:

The salivary gland in human being is exocrine gland which helps in the production of saliva through a system of ducts.

Human beings have three paired major ducts in salivary glands that secrete their secretions in the mouth by the help of duct.

The main type of enzyme secreted is alpha-amylase which helps in the breakdown of starch into glucose and maltose.

The two main processes by which plant cells absorb, release, and use energy area. fermentation and respiration.
b. digestion and photosynthesis.
c. photosynthesis and respiration.
d. aerobic and anaerobic respiration.

Answers

The two main processes by which plant cells absorb, release, and useenergy are photosynthesis and respiration. The answer is letter C. Theprocess of photosynthesis is present in the chloroplasts of a pant cell.Photosynthesis uses the sun’s rays in the form of electromagnetic energy toconvert it into chemical energy to be used for the plants. It needs proteinsthat are present in the plants to perform a series of necessary conversions. Moreover,the energy from the sun is the main catalyst to convert the carbohydrates inthe plant into simpler sugars. And then a series of complex reaction takesplace that their end product is oxygen. The oxygen produced is the cellularrespiration.

Answer: C. photosynthesis and respiration.

Explanation:

A student drew models of an electromagnetic wave and a water wave. Which scientific question did the student MOST LIKELY ask to know how to draw these models? A. Do water waves travel at a slower speed than electromagnetic waves ? B. Can water waves and electromagnetic waves travel through different media? C. How do water waves and electromagnetic waves increase their amplitude ? D. Are water waves and electromagnetic waves examples of transverse waves ?

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Answer:

answer is c

Explanation:

etc

Most _____are crops like corn, goldenrod, or clover.hydrophytes
mesophytes
xerophytes

Answers

The question says, 'most ........... are crops like corn, golden rod or clover. The correct option is B, that is, mesophytes. Mesophytes are terrestial plants which are specially adapted to surivive in a moderate enviroment, that is, an enviroent that is neither dry nor wet. Good examples of these crops are corn, goldenrod and clover.

Most Mesophytes are crops like corn, goldenrod, or clover.

Other Questions

Oxygen has an atomic number of 8. The n = 1 energy level has two electrons, and the n = 2 energy level has six electrons. Oxygen's valence is _____.

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Over a lifetime, a diet high in cholesterol can cause blood vessels to become less elastic. WHICH CAN LEAD TO HIGH BLOOD PRESSURE? WHAT DISEASE DESCRIBES THIS CONDITION? A. obesity B. Heat stroke C. Atherosclerosis D.sickle cell anemia

Summarize the levels of organization studied in ecology