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ELEN [110]
2 years ago
12

HELP ME GUYS PLEASE!

Biology
2 answers:
german2 years ago
8 0

Answer: number 1

Explanation: that is when we could first sustain life because that is when we gained atmosphere and when we could hold carbon and oxogen

olga2289 [7]2 years ago
7 0

Answer:

I think the answer was A. Because before the ozone layer oxygen was not as much for life on earth to evolve so once the ozone layer started to form up it kept organisms and earth surface safe from direct uv lights so life started evolving.

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pashok25 [27]

Correct option is A)

There are electrical and concentration gradients in neurons that induce the sodium ions to enter the cell. The resting potential is maintained because the channels for sodium ions are closed. The membrane remains impermeable to sodium ions in the rest state. The membrane is more permeable to potassium passage. The potassium ions leak through the membrane at a greater rate than sodium enters. There is loss of positively charged ions from the inner part of the cell membrane. The inner part of the membrane carries a relatively more negative charge than the outer part of the cell membrane.

Thus, the correct answer is option A.

5 0
2 years ago
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What are plastids<br>And what is a middle lamela ​
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Answer:

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Middle Lamella is the outermost layer of the cell. It acts as an adhesive, sticking adjacent plant cells together and gives the plant stability, channels in the cell walls that link adjacent cells together, and allow transport of substances and communication between cells.

Explanation:

5 0
3 years ago
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Why is respiration known as energy releasing process?​
NARA [144]

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8 0
3 years ago
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What distinguishes bogs, marshes, and swamps from each other?
vladimir2022 [97]
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Bogs, marshes, and swamps are types of wetlands. Swamps and marshes are mineral soil wetlands. Swamps are deeper and with a larger proportion of surface water than marshes. Usually, swamps develop from marshes that fill in. Bogs are organic soil wetlands. They are acid areas with acidic groundwater.</span>
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