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lubasha [3.4K]
3 years ago
13

Please help!!!! Grizzly bears and polar bears are very closely related, so much so that they can reproduce to form hybrid offspr

ing. Use your understanding of natural selection to describe how polar bears became a separate classification from the grizzly.
Biology
2 answers:
Akimi4 [234]3 years ago
7 0

Answer:

Scientists believe that at first these bears scavenged seal carcasses that had washed ashore, and gradually began to hunt the seals by waiting at the water's edge as the seals surfaced to breathe. This is believed to be an important step in the evolution of a new bear species, the polar bear

Over time the new polar bears were used to the cold climate and learnt how to fish, they then separated from the grizzly bears, they developed new creatures which would help them survive in one of the most dangerous climate.

Explanation:

HOPE THIS HELPS :D!!!!!!

natima [27]3 years ago
3 0

Scientists believe that at first these bears scavenged seal carcasses that had washed ashore, and gradually began to hunt the seals by waiting at the water's edge as the seals surfaced to breathe. This is believed to be an important step in the evolution of a new bear species, the polar bear

Over time the new polar bears were used to the cold climate and learnt how to fish, they then separated from the grizzly bears, they developed new creatures which would help them survive in one of the most dangerous climate.

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Malik was out walking on a hot day and then decided to go inside an air conditioned
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Answer:

Answer:

B. only chemoreceptors,

mechanoreceptors, thermoreceptors, and

nociceptors

Explanation:

Receptors are chemical structures, that

receive and transduce signals that may

be integrated into biological systems.

Receptors that can be found in the

mouth include: chemoreceptors,

mechanoreceptors, thermoreceptors, and

nociceptors.

Chemoreceptors

These are receptors that detects

chemical stimuli, either molecules or ions

dissolved in liquids. An example would

be our taste buds in the mouth, because

they respond to specific molecules or

ions in our ingested food.

Thermoreceptors responds to changes

in temperature. These receptors are

present in the oral cavity, skin and

hypothalamus.

Mechanoreceptors are receptors that

respond to distortion of the plasma

membrane that occurs due to touch,

pressure, vibration, stretch, stress or

strain

. They can be found in the mucosae of

hypothalamus.

Mechanoreceptors are receptors that

respond to distortion of the plasma

membrane that occurs due to touch,

pressure, vibration, stretch, stress or

strain

. They can be found in the mucosae of

ginviva (gum), cheek, tongue and soft and

hard palate.

Nociceptors are receptor responds

to painful stimuli. The purpose of

nociceptors is to inform the body of

injury, damage or threat of damage to

body tissues so that a response may be

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7 0
2 years ago
Which energy conversion occurs in the cells of an animal, such as the
zimovet [89]
I think C, correct me if I’m wrong.
3 0
3 years ago
Read 2 more answers
Consider the events that describe the progress of a protein that will be secreted from the cell. 1. SRP binds to the growing pol
Sphinxa [80]

Answer: the answer is option A. 5 → 1 → 6 → 3 → 2 → 4

Explanation: the events that describe progress of a protein that will be secreted from cell are as follows; Protein synthesis begins in the cytosol,  SRP binds to the growing polypeptide chain and to the ribosome, Translation pauses,  SRP binds to its receptor,   Translation resumes and finally - The signal sequence is cleaved. All these formed the sequence 5 → 1 → 6 → 3 → 2 → 4

6 0
4 years ago
Some species of birds have special mating rituals. this is an example of
vampirchik [111]
I would select B or C as the answer because i have no idea what the other ones are :)
4 0
3 years ago
Read 2 more answers
An energy-rich organic compound needed by organisms is ?
AfilCa [17]
The energy-rich compound needed by organism is : Carbohydrates
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hope this helps
5 0
3 years ago
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