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UkoKoshka [18]
2 years ago
13

The organisms that first inhabited the earth are thought to have been:.

Biology
1 answer:
Reptile [31]2 years ago
7 0

Answer:

there were only anaerobic heterotrophic bacteria (the primordial atmosphere was virtually oxygen-free).

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Identify the position of the fetus whose buttocks are in the fundus, whose fetal back is on the maternal right side between the
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The answer would be: right occiput anterior (ROA)

Presentation of fetus determines which part of their body that will be delivered first. Some presentation will have bigger surface area than others which could complicate the process of the labor. In this case, the baby back in on the right <span>between the midline and lateral surface of the abdomen, so the occipital area should be at the anterior of the pelvis.</span>
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3 years ago
To test how fertilizer affects aquatic animals, a student prepared four identical containers with water fleas. The student then
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The genetics of a-thalassemia are similar to narrow sense heritability in that there is a gradation of phenotype, with each alle
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In strict mode, the narrow-sense heritability is the proportion of the additive genetic variance that contributes to the total of the phenotypic variance. This value can be associated with the inheritance of the a-thalassemia .

Explanation:

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3 years ago
an isolated colony on a selective medium is not considered a pure culture because inhibated organizms might be masked by the col
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An isolated colony on a selective medium is not considered a pure culture because inhibited organisms might be masked by the colonies. This statement is true.

On the basis of their constitution or usage, culture media can be classified into various groups; these include defined, complex, selective, as well as enrichment medium.

A selective medium consists of dyes or noxious substances/chemicals which inhibit the growth of specific microorganisms but promote the growth of other microbes.

A pure culture is a laboratory culture which contains a single species of microorganism. It is free from other microorganisms.

Since selective media affects the growth of distinct organisms differently, therefore, an isolated colony formed in such type of medium is not considered a pure culture.

To learn more about pure culture here

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In which phase does a cell spend most of its time?
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a

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