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AleksandrR [38]
3 years ago
9

By the end of the ____ period, all major animal lineages were present in the seas due to a great adaptive rafiation of animals

Biology
1 answer:
natali 33 [55]3 years ago
6 0

Answer: cambrian

Explanation:

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When carbon dioxide is formed, one carbon atom forms double covalent bonds with two oxygen atoms. Carbon dioxide is considered
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<span>Carbon dioxide is a colorless and odorless gas that is vital to life on Earth. This naturally occurring chemical compound is made up of a carbon atom covalently double bonded to two oxygen atoms. Carbon dioxide exists in Earth's atmosphere as a trace gas at a concentration of about 0.04 percent by volume. Natural sources include volcanoes, hot springs and geysers, and it is freed from carbonate rocks by dissolution in water and acids. Because carbon dioxide is soluble in water, it occurs naturally in groundwater, rivers and lakes, in ice caps and glaciers and also in seawater. It is present in deposits of petroleum and natural gas.</span>
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4 years ago
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In carbon cycle cellular respiration is the process responsible for the conversion of carbon containing sugars into carbon dioxi
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5 0
3 years ago
According to the Shannon Diversity Index, which of the five blocks above, with each containing 36 squares, would show the greate
Semmy [17]

Answer:

so here correct option is A. 5

Explanation:

solution

as number of population groups live in a definite area is called diversity

so here in 1  there is only 2 groups of population

and in 2 there is 3 types of population groups

and in 3 there is 2 type of population groups

and in 4 there is 4 type population group

but they are not not evenly abundant and population of 1 group that is much less

so  it might be a foreign population group

so here in 5 there is 4 type of population group which means it has higher diversity compare to other

so here correct option is A. 5

8 0
4 years ago
A color-blind (X-linked recessive) human with Klinefelter syndrome has parents both of whom have normal color vision. 4a. From w
sineoko [7]

The extra X chromosome is received from mother.

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Klinefelter's syndrome is the condition of chromosomal aberration where the person has an extra X chromosome. This means the genotype of the person is 44+XXY and the total chromosome number is 47. This condition is achieved due to inappropriate meiotic division and one of the sperm or ovum has the an extra X chromosome.

Here both the parents are normal in terms of colour vision. So the father cannot have the gene of colour blindness because if it was present, then father would have been colour blind because he has only one X chromosome per cell. So its present in mother who is heterozygous in terms of colour blind gene. So the extra X chromosome also came from her which made the presence of two defective X chromosomes in the offspring and made it colour blind.

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3 years ago
1. What is DNA? Why is it important to every living thing?
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