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Alenkinab [10]
4 years ago
8

7. When did whale ancestors begin living full time in the water?

Biology
1 answer:
antoniya [11.8K]4 years ago
8 0
Around 40 million years ago

The earliest whales that we think were fully aquatic, that is, they never left the water, are found around 40 million years ago, during the middle Eocene. That means that the transition from terrestrial animals to fully aquatic animals took about 12 million years.
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Which systems does your skeletal system coordinate with to allow you to move? respiratory and nervous respiratory and circulator
elixir [45]
Muscles connect to your<span> skeleton and they contract and </span>move the skeleton along.<span> The calcified bones of </span>your<span> skeleton also work with the circulatory </span>system<span>.
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8 0
3 years ago
Read 2 more answers
Which ocean zone is characterized by high water pressure, low temperatures, and no sunlight? pelagic zone neritic zone intertida
wariber [46]

Answer:

The answer is <u>Abyssal Zone</u>

Explanation:

This zone is characterized by extremely high water pressure, consistently low temperature, no sunlight, and sparse life. Hope this helps!

6 0
3 years ago
What does soil have to do with climate change ?
Troyanec [42]

Answer:

Las montañas generan sombre y brisa, mientras que que en una pradera que es casi llano el calor se acumula en el suelo pero el problema es la de forestación que provoca que las arboles que actuaban como las montañas dañen el entorno secando el fresco y húmedo suelo causando problemas con el ambiente

7 0
3 years ago
What is the difference between primary dimensions of diversity and secondary dimensions of diversity?
Sveta_85 [38]

Answer:

A. Primary dimensions are less changeable, while secondary dimensions can change and are less visible.

Explanation:

The differences between primary and secondary dimension of diversity are as follows -

A) Primary Dimension

a) Primary dimension are those which are salient and hence they cannot change

b) Some common examples of primary dimensions are - ethnicity, sexual orientation, ethnicity,  gender, race, physical abilities/qualities, age etc.

A)  Secondary Dimension

a) Secondary dimension are not only limited to specific features and hence they can change with time.

b) Some common examples of secondary dimension are - geographic location, marital  status, parental status. work experiences, educational background, income,military experience, religious beliefs, etc.

Hence, option A is correct

6 0
3 years ago
The lagging strand is replicated with a series of okazaki fragments and that is why its synthesis is considered to be
ASHA 777 [7]

Answer:

Their synthesis is considered to be discontinuous.

Explanation:

Okazaki fragments, which are strands of DNA that are produced seperately and then linked together, this is why their synthesis is considered to be discontinuous.

I hope this answer helps.

7 0
3 years ago
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