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Virty [35]
3 years ago
14

What marks the boundary between the mesozoic and the cenozoic (called the k-t boundary)?

Biology
1 answer:
VikaD [51]3 years ago
7 0
The Cretaceous mass elimination denotes the limit between the Mesozoic and Cenozoic times. It was a mass termination of some seventy-five percent of the plant and creature species on Earth that happened over a topographically brief timeframe for more than 66 million years. 
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Do all the subatomic particles participate in chemical reactions?
bekas [8.4K]
No. Not all subatomic particles participate in chemical reactions.

The subatomic particles are proton, neutron, and electron.

neutron - subatomic particle with NO electrical charge. It is found in the nucleus of an atom.

proton - subatomic particle with 1 positive electrical charge. It is found in the
nucleus of an atom.

electron - subatomic particle with 1 negative electrical charge. One or more electrons move around the nucleus of an atom.

Among the three subatomic particles, electron is directly involved in the chemical reaction between two atoms.


8 0
3 years ago
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What was the initial human impact on the wolf population
LenKa [72]

Answer:

follow me and please mark as brainliest answer

Explanation:

wolfs play a key role in keeping ecosystem healthy the Caracesess of their prey also help redistribute nutrients and provide food for other wildlife species like, grizzly bears and scavengers..

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3 years ago
A nurse cares for a client who suffered a myocardial infarction two (2) days ago. A high pitched, scratchy, scraping sound is he
iris [78.8K]
<h2>Inflammation of the pericardial sac is the process that would have occurred within the pericardium.</h2>

Explanation:

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Which of these macromolecules are made of fatty acid molecules?
PtichkaEL [24]
Lipids I think from playto
5 0
3 years ago
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What is the leaf of a plants function ?
Radda [10]

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3 years ago
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