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scoundrel [369]
3 years ago
7

What information do fossils provide about the history of organisms on Earth? A. Organisms have stayed exactly the same since the

Earth was formed. B. Fossils do not provide any information about the history of organisms on Earth. C. Organisms on Earth have evolved and changed significantly over time. D. Organisms on Earth have not evolved or changed during the last 200 years.
Biology
2 answers:
taurus [48]3 years ago
6 0

卂几丂山乇尺

Option "C" that is; Organisms on Earth have evolved and changed significantly over time,

is correct ✓

Serga [27]3 years ago
4 0

Answer: C

Explanation: I just took a quiz on it so, yeah.

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State one way in which the sperm cell is different from cells in the developing fetus
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Answer:

An egg cell is bigger than a sperm cell.

Explanation:

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grigory [225]

Answer:

1 is b

2 is c

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Explanation:

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What is the role of hemoglobin in the body answers?
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4 years ago
Complete each statement by using the appropriate word or phrase from the list. Then place the statements in the order of an acti
timurjin [86]

Answer:

1. Potassium

2. increasing towards zero

3. hyperpolarization

4. voltage-regulated Potassium

Explanation:

Membrane potential can be defined as the difference in electric charges inside and outside of a cell. The resting membrane potential (RMP) occurs when there is no net current across the membrane and therefore the cell is in a non-excited state. At the RMP, sodium ions (Na+) are more concentrated inside the extracellular fluid (ECF) than inside the intracellular fluid (ICF), while potassium ions (K+)  are more concentrated inside the ICF. The diffusion of K+ outside the cell triggers its hyperpolarization, by becoming the membrane potential more negative compared to the resting potential. As the potential nears +35 mV, the voltage-regulated potassium channels are open, thereby K+ ions leave the cell down its concentration gradient, while voltage-gated Na+ channels become saturated and inactivate.

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Mandarinka [93]

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