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Alina [70]
3 years ago
10

Fossils evidence shows that ___________________were the first photosynthetic organisms on earth,about 1.2 billion years ago.​

Biology
2 answers:
tankabanditka [31]3 years ago
7 0
There is suggestive evidence that photosynthetic organisms were present approximately 3.2 to 3.5 billion years ago, in the form of stromatolites, layered structures similar to forms that are produced by some modern Cyanobacteria
alekssr [168]3 years ago
4 0

Answer:

cyanobacteria

Explanation:

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Answer:

Lateral line system, also called lateralis system, a system of tactile sense organs, unique to aquatic vertebrates from cyclostome fishes (lampreys and hagfish) to amphibians, that serves to detect movements and pressure changes in the surrounding water.

Explanation:

I hope I helped you!!

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3 years ago
Domestication is the process of selecting wild organisms for their characteristics and keeping those characteristics the same ov
Elden [556K]
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3 years ago
Why does ethanol becomes cloudy/white when testing fat
ki77a [65]

Answer:

Ethanol is known as a fat solvent, and the cloudy or white color that it acquires when testing fat is due to the fact that this test includes the addition of water, forming an emulsion.

Explanation:

<u>The emulsion test for fats</u> is a test used to show the presence of these in some substances or foods.

Under normal conditions, fats are miscible - they can be dissolved - in ethanol, an alcohol, but not in water.

This test consists of dissolving the substance to be tested in ethanol, and then adding water. The principle by which the emulsion test is governed is that ethanol allows a certain amount of fat to dissolve in water, forming a cloudy or whitish emulsion.

Learn more:

Differences between emulsion and solution brainly.com/question/6677364

4 0
3 years ago
I need help coming up with an abstract for class. My topic is understanding birth defects and how to avoid them.
slega [8]

Answer:

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Explanation:

5 0
2 years ago
Match each form of energy with its definition. The energy of the bonds between atoms.
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