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Arlecino [84]
4 years ago
6

During what part of the earth's history did living organisms first appear? What were they?

Biology
1 answer:
Bingel [31]4 years ago
8 0

Answer:

The earliest time that life forms first appeared on Earth is at least 3.77 billion years ago, possibly as early as 4.28 billion years, or even 4.5 billion years; not long after the oceans formed 4.41 billion years ago, and after the formation of the Earth 4.54 billion years ago.

Explanation:

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Tamiku [17]

Answer:

Plants can cause mechanical and chemical weathering

Explanation:

Plants can cause mechanical and chemical weathering. When plants cause mechanical weathering, their roots grow into rocks and crack them.It can also happen in streets or sidewalks. When plants cause chemical weathering, there roots release acid or other chemicals, onto rocks, which then forms cracks, and breaks apart.

8 0
3 years ago
HELP ASAP
Anastasy [175]

Answer:

B

Explanation:

Cytoplasm is a thick solution that fills each cell and is enclosed by the cell membrane. It is mainly composed of water, salts, and proteins. In eukaryotic cells, t

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Anastasy [175]
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For the first one is for earthquakes and the second one is “add toothpicks diagonal across the sides”
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3 years ago
Does the food you eat can affect your gut bacteria? Explain?
lys-0071 [83]

Answer:

Your gut bacteria can affect how your food is digested, how fat is stored and whether you feel hungry or full. Thus, a healthy gut bacteria may be important for maintaining a healthy weight. High-fiber foods like whole grains, fruits, vegetables, nuts and seeds can all promote healthy gut bacteria.

Explanation:

6 0
3 years ago
A biochemist isolates and purifies various molecules needed for DNA replication. When she adds some DNA, replication occurs, but
galina1969 [7]

Answer:

The correct answer is DNA ligase.

Explanation:

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