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irina1246 [14]
3 years ago
9

Why do researchers think that seals use visual cues to navigate?

Biology
1 answer:
Zielflug [23.3K]3 years ago
3 0

Answer:

Their vision underwater is better than a humans, but inferior on land. Lenses are enlarged and almost round, adapted for focusing on light that is refracted upon entering water. They use the light to continue swimming which is why researchers think they use visual cues because of how quickly they react to the amount of light in the water

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What constitutes the majority of the debris found in the “garbage patch" located in the North Pacific Ocean?
mezya [45]

Answer:

Old Fishing Gear

Explanation:

The patch, in fact, is made up mostly of abandoned fishing gear. According to the study, fishing nets alone make up 46 percent of the 79,000 tons of garbage.

3 0
3 years ago
Some regions of a polypeptide may coil or fold back on themselves. This is called _____, and the coils or folds are held in plac
zalisa [80]

Answer:

The options are

A. secondary structure ... hydrogen bonds

B. secondary structure ... peptide bonds

C. tertiary structure ... hydrogen bonds

D. primary structure ... covalent bonds

E. tertiary structure ... covalent bonds

THE CORRECT ANSWER IS A.

A. secondary structure ... hydrogen bonds

Explanation:

The secondary structure of a polypeptide shows the localized regions of its organised structure being upheld by hydrogen bonds among the major groups

-NH and C = O

At the same time, it inhibits the hydrogen bonds of the side chains from influencing the reaction process.

The polypeptide secondary structure shows the dexterity to curl or fold as sustained by the polypeptide chains.

8 0
3 years ago
¿Cuál es de las siguientes opciones no es indispensable para la manipulación genética? *
Readme [11.4K]

Answer:

Hoy en día, podemos incorporar nuevos genes de una especie en una especie completamente no relacionada a través de la ingeniería genética, optimizando el rendimiento agrícola.

5 0
2 years ago
When the vasomotor center of our brain wishes to increase blood pressure, it increases ____________ signals causing ______.
dlinn [17]

When the vasomotor center of our brain wishes to increase blood pressure, it increases<u> the heart rate signals </u>causing<u> The greater contraction of the heart causes more blood vessels to constrict, increasing the blood vessels' resistance.</u>

By speeding the heartbeat, making the heart beat harder, and constricting some blood vessels, the sympathetic nervous system increases blood pressure. This will enhance the vessels' resistance.

What controls blood pressure by the vasomotor center?

The vasomotor center modifies the tone of the vascular smooth muscle. Both the local and systemic blood pressure are impacted by this. The vasomotor center produces increased sympathetic tone when blood pressure lowers. This causes an increase in blood pressure.

How is blood pressure regulated?

The autonomic nervous system has short-term control over blood pressure (ANS). Baroreceptors are capable of detecting changes in blood pressure. These are situated in the carotid sinus and aortic arch. High arterial pressure causes the blood vessel wall to stretch, activating the baroreceptors.

What systems regulate peripheral resistance in the vasomotor center?

The vasomotor center in the tunica media regulates smooth muscle contraction or vessel tone. Circulating output is impacted by changes in peripheral resistance, pressure, and flow. The majority of these neurons are in charge of causing sympathetic neurons to release the neurotransmitter norepinephrine.

to learn more click below-

brainly.com/question/10013870

#SPJ4

8 0
1 year ago
Calcium and phosphate are important parts of the bone matrix because they:
777dan777 [17]

Answer: it’s c

Explanation:

3 0
3 years ago
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