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lora16 [44]
2 years ago
15

When was oxygen first produced?

Biology
2 answers:
sp2606 [1]2 years ago
5 0

2.45 billion years ago

Explanation:

but was discovered in 1772

Wewaii [24]2 years ago
3 0

Answer:

2.45 billion years ago

Explanation:

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Answer:

In unicellular organisms, cell division is the means of reproduction; in multicellular organisms, it is the means of tissue growth and maintenance. Survival of the eukaryotes depends upon interactions between many cell types, and it is essential that a balanced distribution of types be maintained. This is achieved by the highly regulated process of cell proliferation. The growth and division of different cell populations are regulated in different ways, but the basic mechanisms are similar throughout multicellular organisms.

Explanation:

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A prokaryote is most likely to use which of the following modes of metabolism to release energy if it is in an environment witho
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Most heterotrophs are chemoorganoheterotrophs<span> (or simply </span>organotrophs<span>) who utilize organic compounds both as a carbon source and an energy source. The term "heterotroph" very often refers to chemoorganoheterotrophs. Heterotrophs function as consumers in </span>food chains: they obtain organic carbon by eating autotrophs or other heterotrophs. <span>Most </span>opisthokonts<span> and </span>prokaryotes<span> are heterotrophic</span>
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3 years ago
Read 2 more answers
ndividuals III-6 and III-7 have two little monstersand are expecting a third one. Their two childrenhave two eyes. What is the c
CaHeK987 [17]

Answer:

The correct answer is - 75% or 3/4.

Explanation:

In the given question, there is a cross between III-6 and III-7 that produced two double eyes monsters and expected one more. As given in the image that the A or single eye is dominant over the a or double eye then both parents must be heterozygous as they produced double eye offspring (aa) and they do have only one eye.

then chances of single eye offspring would be -

cross: Aa and Aa

gametes: A, a and A, a

Punnett square:

           A      a

A         AA     Aa

a         Aa      aa

so there are 75% chances to have a single eye and 25% chances for a double eye.

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3 years ago
What are the 4 types of Evidence for the evolution?
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iv) Presence of Sewall-Wright effects or genetic drift in the population.
Please mark as brainliest.
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3 years ago
Sliding a box across the floor.....Desirable or not desirable friction??
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3 years ago
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