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kirza4 [7]
3 years ago
6

A student wants to prove that amphibians appeared on earth before birds. which of these would provide the most reliable informat

ion about the periods when amphibians and birds appeared on earth? fossils animal size animal color feeding habits
Biology
1 answer:
Wewaii [24]3 years ago
5 0

A student wants to prove that amphibians appeared on earth before birds. The student should use the fossil findings as evidence to provide the most reliable information about the periods when amphibians and birds appeared on earth. Fossils would throw light on the internal body structures that bear the closest similarity to either the amphibians or the birds. The radiocarbon dating of the fossils will reveal its age. This can be used to figure out the time of divergence of the two types.

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Different microbes grow in a wide variety of environmental conditions; however, most have preferences for certain temperatures,
lesya692 [45]

Answer:

this is a TRUE statement.

Explanation:

Different microbes grow in a wide variety of environmental conditions; however, most have preferences for certain temperatures, pH, and atmospheric gases because although microbes are widespread in their occurrence,they are found almost everywhere,in the air,water,soil,food,decaying matter,oil deposits,in plants etc.

but their number and their types vary according to the locality and environmental conditions.

Although, some microbes are always present and contribute towards natural flora BUT besides this others are present in specific environments such as some in hot springs bearing very HIGH TEMPERATURE RANGES for example: <em>Thermus aquaticus.</em>

some of them inhabit the acidic or alkaline soil feeding on HUMUS.

Most of the microbes prefer ATMOSPHERIC GASES i.e some require oxygen for their survival .For example: <em>Pseudomonas.</em>

some don't require O2 for survival i.e <em>Spirochete.</em>

IN SHORT, most of the microbes have preferences for various environmental conditions.

5 0
3 years ago
Which is a biotic factor in a marine ecosystem?
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Biotic would mean living so fish and sea plants
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For natural selection to occur, variation must exist. this is true because without variation
chubhunter [2.5K]
<span>Without variation, there is no difference between members of a population to be "selected for" in the first place. This is a basic tenet of natural selection. A new trait must arise in order to advance or decrease the fitness of the individual, and hence, its ability to pass on its genes.</span>
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How is the liver adapted to its regulatory functions​
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The liver regulates most chemical levels in the blood and excretes a product called bile. This helps carry away waste products from the liver. All the blood leaving the stomach and intestines passes through the liver.

HOPE IT HELPS

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Rock color chart method

Explanation:

hope this helps

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