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sammy [17]
3 years ago
9

Carbon is the basis for life on earth because it _____.

Biology
1 answer:
dmitriy555 [2]3 years ago
4 0
I think the answer is A. forms many organic molecules :)
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What is the time period of grapolites
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Answer:

Graptolites lived from the Cambrian Period, about 510 million years ago, disappearing in the Carboniferous Period, around 320 million years ago.

hope this helps!

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3 years ago
What is meant by the following statement? The cell membrane is semipermeable. A. The membrane allows all polar molecules into th
Gennadij [26K]

I believe the correct answer would be B.  Semipermeable means that it allows certain substances to pass through, and certain other ones to not pass through.  So given all of your options, I would say that B makes the most sense.  Hope this helped!

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3 years ago
Organism in which the embryonic blastopore becomes its anus
Anika [276]

Organism in which the embryonic blastopore becomes its anus Deuterostome

<u>Explanation:</u>

The term Deuterostome refers to second mouth. The first opening which is called blastpore becomes its anus in deuterostomes. In protostomes, this first opening will be the mouth.  The other name given to these Deuterostomes enterocoelomates. It is the enterocoely from which the   coelom of  Deuterostom starts emerging and growing.  

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3 0
3 years ago
What is the only effective way invertebrates fight off disease?
weeeeeb [17]
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6 0
3 years ago
In active transport, molecules can be moved against their concentration gradient, what is required for this
babymother [125]

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Energy (in the form of ATP)

Explanation:

The main difference between active transport and passive transport is that active transport needs the energy to work. Active transport also moves molecules against the concentration gradient, kinda like a pump. This pump will need energy in the form of adenosine triphosphate (ATP) to keep it working. Adenosine triphosphate will be broken down into adenosine diphosphate (ADP). The energy from the breakdown reaction will be used by the pump.

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3 years ago
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