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Keith_Richards [23]
3 years ago
8

Oxygen and air are? Abiotic or biotic 

Biology
2 answers:
satela [25.4K]3 years ago
7 0

Answer:

Oxygen and air are both abiotic because they do not have carbon atoms, therefore they are non living substances.

Bond [772]3 years ago
5 0

oxygen and air are abiotic

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professor190 [17]

Answer:

C.  Lizards were the first organisms on Earth to have limbs.

Explanation:

This cladogram illustrates when and in what species novel anatomical traits occurred. All the organisms that follow after a certain point will have this trait present. Thus, earthworms are the first species to evolve segmented bodies which will be present in all the following organisms such as salmons. Here, segmentation is found in the vertebrae of the backbone as well as in the muscles and nerves that spread from the spinal cord, at a finer level.

This cladogram does not illustrate the evolutionary time relationship between different species. Thus, it cannot be inferred that the kangaroos evolved after earthworms.

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Which population is most likely to survive in the event of a new disease?
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