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marusya05 [52]
2 years ago
7

Someone please help me i need this as quick as possible

Biology
2 answers:
Pachacha [2.7K]2 years ago
5 0

Answer:

1: A

2: E

Explanation:

katrin [286]2 years ago
4 0

Answer:

A, F

Explanation:

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Moist walls - gases dissolve in the moisture helping them to pass across the gas exchange surface. Permeable walls - allow gases to pass through. Extensive blood supply - ensuring oxygen rich blood is taken away from the lungs and carbon dioxide rich blood is taken to the lungs.

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2 years ago
Which event may lead to speciation? Question 3 options: A. a population is divided by the formation of a river valley. two popul
lora16 [44]

A new island is formed from a volcanic eruption is an event that lead to speciation.

<h3>What is speciation?</h3>

Speciation is the evolutionary process in which in populations of organisms come to being or evolve to become distinct species. The biologist Orator F. Cook made some Discovery and term it speciation in 1906when he performed experiment on cladogenesis, the splitting of lineages, as opposed to anagenesis, phyletic evolution within lineages.

Therefore, A new island is formed from a volcanic eruption is an event that lead to speciation.

Learn more about speciation from the link below.

brainly.com/question/2113835

7 0
2 years ago
Which of these statements is true
katrin [286]

Answer:

Whichever one isnt false.

Explanation:

Theres not much to work with here so theres not much I can do.

5 0
3 years ago
What techniques do scientists use to study ocean sediments
artcher [175]
The instrument of choice would be the the clam shell sampler, which is also know as a grab sampler. Another instrument they use is the piston corer which is an open tube on a cable that gets dropped from a ship. 
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Who does water pollution affect?
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B. only the animals living in water

4 0
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