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m_a_m_a [10]
2 years ago
6

Define the term excretion.

Biology
1 answer:
Arisa [49]2 years ago
4 0

The liver breaks down many substances in the blood, including toxins. The liver also excretes bilirubin — a waste product of hemoglobin catabolism — in bile. ... The lungs are responsible for the excretion of gaseous wastes, primarily carbon dioxide from cellular respiration in cells throughout the body.

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What index provides evidence of when different types of life evolved on Earth?
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There are problems with each of these methods. The fossil record is like a movie with most of the frames cut out. Because it is so incomplete, it can be difficult to establish exactly when particular evolutionary changes happened.

Modern genetics allows scientists to measure how different species are from each other at a molecular level, and thus to estimate how much time has passed since a single lineage split into different species. Confounding factors rack up for species that are very distantly related, making the earlier dates more uncertain.

These difficulties mean that the dates in the timeline should be taken as approximate. As a general rule, they become more uncertain the further back along the geological timescale we look. Dates that are very uncertain are marked with a question mark.

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3 years ago
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aivan3 [116]

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Explanation:

5 0
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3 0
2 years ago
Which statement best describes the term limiting factors?
amm1812

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a dream is one its synonym with one syllable.
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