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posledela
4 years ago
12

Why do pelicans and humans require a more complex heart

Biology
1 answer:
Nitella [24]4 years ago
6 0

Pelicans and humans have complex heart because there is need for them to deliver more oxygen per liter blood to the body. Also, there heart is made up of four chamber and they have high metabolic rate which necessitate them to supply efficient blood throughout the body. 

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What function do collagen and elastin have in arteries?
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They provide elastic rebound of the arterial wall to help smooth out blood flow.
7 0
3 years ago
What kind of tide does the observer experience when he is between tidal bulges?
Aneli [31]
High tide. That is where the tidal bulge is.
7 0
3 years ago
Which type of feathers are long and extend beyond the body for lift?
geniusboy [140]
The correct answer is flight feathers.
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5 0
4 years ago
Evidence of glacial action can be observed all over the park. Which of these are way
Maru [420]

Abrasion, plucking, deposition, and physical weathering are the glacial actions which can be observed all over the park.

Explanation:

When the huge ice masses slope down to fall over the land surface during a glacier, many glacial actions or processes take place which defines the landforms formed on the surface. These actions include abrasion, plucking, deposition, and physical weathering.  

Abrasion is an erosive process which scrapes the surface of ice rocks and other frozen rocky material beneath the ice and causes striations over the rocks.

Plucking also an erosive process plucks the frozen rocks beneath the ice surface.

Physical or freeze-thaw weathering causes water to enter the cracks in the rocks when the temperature increases. This water enters inside and freezes inside when the temperature goes down. This repeated melting and freezing of water destabilizes the rocks and will break the rocks.

These materials which are worn off are transported and deposition on the land surface when the glacier settle down.  

Longshore drifts occur along coastlines and brings materials along the coast when waves move at an angle with the coastline.

4 0
3 years ago
Place the
maks197457 [2]
I THINK:

The DNA strands unwind, and
RNA polymerase binds to the
template strand.

The tRNA moves through mRNA
with the activated amino acids
attached to it.

The synthesis of mRNA begins.
The amino acids assemble
to form peptide.

The mRNA undergoes intron
splicing and exits the
nucleus.

(sorry in advance if it's wrong)
8 0
3 years ago
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