All categories

2 years ago

Explain why sponges and cnidarians were the first animals to evolve

2 answers:

6 0

Once the Earth was full of water (ocean) after volcanic activities the mainland became land ( sorry about my english i am hungarian and i am still learning the language )

alisha [4.7K]2 years ago

5 0

Sponges and cnidarians were the first animals to evolve from a multicellular ancestor. The oldest fossil evidence of multi-cellular animals is burrows that appear to have been made by smooth, worm like organisms. Between 620 and 550 million years ago large, complex, soft-bodied multi-cellular animals appear in the fossil record.

You might be interested in

Help I will give brainliest

Rama09 [41]

Answer:

i thnik the answer is c or b not sure tho sorry if im incorrect :C

Explanation:

5 0

1 year ago

Read 2 more answers

While in South America, you come across what you think are two groups of birds in the same location. They are nearly identical a

joja [24]

Answer: The answer is option C) two different species on the basis of reproductive behavior

Explanation:

This situation observed in South America is a good example of Sympatric speciation.

Where, two organisms similar in many respects by

- occurring in the same territory, differing ONLY as two different species because they DO NOT interbreed - thus, becoming different species on the basis of reproductive behavior.

So, option C is the answer

4 0

2 years ago

Science: Match the parts of the eye to their functions: Structure: 1. Iris 2. Cornea 3. Lens 4. Retina 5. Photoreceptors 6. Opti

alexgriva [62]

Answer:

iris - b

cornea - f

lens - e

retina - c

photoceptors - b

optic nerve - h ( definately know dis one)

rod cells - e

pupil - a

cone cells -g

i tried

Explanation:

5 0

2 years ago

In part A, you analyzed genes that contribute to two diseases. How can scientists use this information to develop new treatments

Sergeeva-Olga [200]

Answer:

Yes scientist will need to develop multiple treatments to control symptoms.

Explanation:

because if they only do one treatment it may not work for everyone because some people could be allergic to that one treatment that's why there are multiple treatments.

8 0

2 years ago

When the temperature of the air increases, the speed of the molecules that make up air decreases. true or false?

ryzh [129]

I think it’s between b, c, and d

3 0

2 years ago

Read 2 more answers