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Svet_ta [14]
3 years ago
13

Which event in Earth's history most directly allowed life to exist on land?

Biology
2 answers:
natita [175]3 years ago
5 0

Answer:

c; Single-celled organisms released oxygen into the air when they photosynthesized.

Explanation:

Got it right on edge

andrew11 [14]3 years ago
3 0

Answer: Single cell organisms absorbed harmful gases from the air when they first formed

Explanation:

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In the 1950s, when Watson and Crick were working on their model of DNA, which concepts were well accepted by the scientific comm
bogdanovich [222]

Answer:

The correct answer will be-

1. Chromosomes are made up of protein and nucleic acid.

2. Genes are located on chromosomes.

3. Chromosomes are found in the nucleus.

Explanation:

Watson and Crick are known for their findings on the structure of DNA in 1953. Their findings were motivated by the book called "What is Life?".

The book stated the concepts which were well accepted by the scientific communities that is the gene determines the trait which is located on the chromosomes proved by the experiments of Morgan.  

The chromosomes are the condensed structure present in the nucleus was suggested by the Nageli in 1884. The chromosomes are composed of nucleic acid and protein was also proved and was well-accepted fact.

But the genes are made up of DNA was not well accepted which was suggested by the experiments of Avery in 1940s.

Thus, the selected options are the correct answer.

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3 years ago
The chance that a certain event will occur is known as its _____.
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Probability is the measure of the likeliness that an event will occur. So.. probability.
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What animal produces cashmere wool?
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Any animal that has alot of thick fur can produce  cashmere wool.
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3 years ago
Which of these are made of cells? (Pick all the correct items)
tensa zangetsu [6.8K]

Answer:

Eyelashes, wing of a fly, feather of an owl, the tip of your nose, the horn of a goat, your kidney, a maple leaf, a blade of grass, claw of a crab, and petal of a rose.

Explanation:

You have to ask yourself on each one if it is living or non-living.

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Matter
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Answer:

Matter is the smallest particle of an element

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