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podryga [215]
3 years ago
10

The webbed feet of a duck true or false?

Biology
2 answers:
makvit [3.9K]3 years ago
7 0

Answer:

This is true

Explanation:

Duck have webbed feet for multiple reason one is to help them swim easier.

postnew [5]3 years ago
6 0

Answer:

true

Explanation:

Ducks, geese, and swans all have webbed feet. The primary use for webbed feet is paddling through water.

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Which will occur if humans continue to overload water systems with excess nutrients?
fomenos

Answer:

Eutrophication.

Explanation:

This is the natural process of excessive enrichment of water with nutrients by which large amount of living organic matter grows in the water.lakes slowly develop large concentration of aquatic life, which eventually decays. Human activities have speeded up this natural process of eutrophication by adding mineral and organic nutrient in larger quantities.

3 0
3 years ago
Read 2 more answers
Which of the following includes all of the levels of organization?
Snezhnost [94]

Answer:

Its probably option A (I think).

8 0
4 years ago
What are the advantages of large organisms being multicellular?
grin007 [14]
If it were to be one giant cell, it would be hard to transport materials across the membrane. Being multicellular allows transporting materials faster and more efficient.
3 0
3 years ago
The arterioles (small arteries) leading to an organ, constrict in order to decrease flow to the organ. To shut down an organ, bl
Elodia [21]

Answer:

The main factor that causes vasoconstriction is the high concentration calcium inside muscle cells.

Explanation:

When the vessels suffer vasoconstriction, the blood supply is decreased and in this way the heat of the body is maintained. The way this happens is because the blood can no longer reach the surface and therefore decreases outward heat radiation.  The main factor that causes vasoconstriction is the high concentration calcium inside muscle cells. There are several factors that cause vasoconstriction, internal or external. Environment is one of the external factors, and what happens to the penguins' feet is an example for it, since they are trying to preserve body heat to survive.

5 0
3 years ago
The light-dependent reactions include an electron transport chain system that works in a very
mamaluj [8]

Explanation:

When the high energy electrons move from the reactive center, they are conveyed from one chain protein to another as the energy in the electrons is harnessed to pump H+ ions from the stroma into the lamellae. The electron will ultimately reduce NADP+ to NADPH and the electrons in the reactive center will be replaced by high energy electrons from the splitting of a water molecule in photolysis. The energy of the sun is used to split the water molecule. The high energy electrons then undergo the same cycle as the previous electrons and the cycle continues.

Eventually a proton-motive force is created across the lamellae membrane. This potential energy of the high H+ ion gradient is used by ATP synthase enzyme to phosphorylate ADPs to ATPs.  

Learn More:

For more on photosynthesis check out;

brainly.com/question/12131960

#LearnWithBrainly

3 0
3 years ago
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