1. in an ecosystem with four levels—producers, primary consumers, and two higher-level consumers—describe where the decomposers operate relative to the other trophic levels. provide at least two examples of organisms at each level.

Answers

Answer 1

Answer: Decomposers, as the name suggests, decompose dead plants or animals into simple compounds. They feed on dead producers from the first levels or consumers from other three levels. Breaking them down, decomposers release nutrients that producers can use.
In an ecosystem with four levels, the first level are producers, such as plants and algae. On the second trophic level, there are primary consumers, herbivores that eat plants, for example, a deer, a rabbit, a grasshopper. The next trophic level belongs to secondary consumers that eat herbivores, for example, a wolf, a fox. The highest level is tertiary consumers that eat carnivores, for example, a bear, an eagle.

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The cytoplasm in a cell carries out a function similair to which human system
Which statement describes how water is pulled up through the xylem to the leaves of the plant? As water exits the leaf, hydrogen bonding between water molecules pulls more water up from below. A As water exits the leaf, signals are sent to the roots to pump more water up to the leaves through the xylem by adhesion. B Evaporation from the leaf decreases the hydrogen bonds that form between the water molecules in the xylem, which helps the water molecules to be pulled up the xylem. C Evaporation of water from the leaf increases the hydrogen bonds that form between water molecules in the air, providing the energy for transport.
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If the voltage applied to a wire increases, then its current is not affected.True
False

Answers

False (if we assume the resistance of the wire remains the same) Current = Voltage / Resistance. Hope i helped man:D

Describe an example of a fossil that consists of an entire organism

Answers

A stone with the imprint of a star fish under layers of rock preserved. Or a leaf.

Which statement best explains why a karyotype can be used as a scientific report

Answers

A Karyotype is the number (or characteristics of) of the chromosome in a cell. In humans the typical number of chromosomes is 46. Sometimes humans have a different number of chromosomes and then the karyotype (for example the number) can be used for reporting for example of genetic disorders- so the answer is that it can be used for reporting of genetic disorders

Is a nucleic acid that contains the genetic information for heredity in most organisms.A. a chromosome
B. genetics
C. a gene
D. heredity
E. DNA

Answers

The correct answer is E. DNA

DNA stands for Deoxyribonucleic acid which is a nucleic acid with genetic material.

Answer:

dna

Explanation:

Which chamber of the heart exits into the pulmonary trunk?

Answers

Answer: the right ventricle

Explanation:

The pulmonary trunk originates from the right ventricle through which deoxygenated blood is pumped into the lungs.

The pulmonary trunk divides into right and left pulmonary artery which carries blood to their respective lungs.

Blood flow into the pulmonary trunk is regulated by the semilunar valve.

Final answer:

The right ventricle of the heart exits into the pulmonary trunk. This process is part of our body's pulmonary circulation, responsible for oxygenating blood.

Explanation:

The chamber of the heart that exits into the pulmonary trunk is the right ventricle. In the human heart, blood flows from the right atrium into the right ventricle after which it's pumped out of the heart into the pulmonary trunk. This blood then splits between the two pulmonary arteries that carry it to the lungs where it gets oxygenated. This process is part of the pulmonary circulation which is responsible for oxygenating blood. It's crucial for maintaining the body's overall oxygen levels and blood supply.

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The villi decrease the surface area of absorption. (True or False)

Answers

The answer is false.
Villi actually increase the surface area.

Final answer:

False.

Villi actually increase the surface area for absorption in the small intestine.

Explanation:

The statement 'The villi decrease the surface area of absorption' is False.

In fact, the villi in the small intestine increase the surface area available for absorption. Villi are small finger-like projections that line the inner surface of the small intestine. They are covered with tiny microvilli, which further increase the surface area. This increased surface area allows for more efficient absorption of nutrients from digested food in the small intestine.

Without the villi, the surface area for absorption would be significantly reduced, making the digestion process less efficient.

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