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slega [8]
3 years ago
8

Why do many diseases such as measles occur only once in a person yet others such as colds occur more than once?

Biology
1 answer:
mezya [45]3 years ago
3 0

Answer:

This happens because of our immune system. Our immune system keep record of every attacking microbe. It contains two type of while blood cells firstly is T cell that respond quickly to the attacking microbe. While secondly B cells that recognize those specific cells and fights them off. In addition to that B cells clones itself as memory cells for that disease and will remains in your body for years

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How do the whiskers and incisors interact to help the rat survive?
amid [387]
The Rat’s whiskers are highly sensitive to touch, they brush over the ground, obstacles, food, and other rats. When they bend, it’s follicles send messages to the rat’s brain.
The Rat’s incisors are the four long, sharp front teeth, they use them for gnawing and for grinding food prior to swallowing it.
6 0
3 years ago
Rabbits are introduced into a grassland area. Which action of the rabbits would harm the buffalo that live in the grassland?
ollegr [7]
The most likely answer choice should and would be B, given that rabbits are herbivores (meaning that they only eat vegetation and plants, including grass). Buffalo's food source(s) and diet consists of grass as well. If enough rabbits are introduced into a grassland area, they will furthermore consume more grass, in turn limiting the food source of the buffalo. 

''Attacking'' prey doesn't necessarily make sense, given that buffalos do not 'prey' on any animal and rabbits themselves are prey.

A to a lesser extent can make sense, although I doubtable.  B's most likely the answer. 
5 0
3 years ago
The cell shown in the diagram is ?
aleksley [76]

Answer:

Plant cell

Explanation:

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5 0
3 years ago
Why is the process of nuclear fusion important to life on earth?
Drupady [299]
Nearly all life on Earth ultimately gets its energy from the sun, which gets "its"energy through nuclear fusion. <span>With the exception of hydrogen, all of the chemical elements needed for life were produced by nuclear fusion of lighter elements, either in the cores of stars or in the shock waves of supernova explosions.</span>
7 0
3 years ago
Read 2 more answers
5. A scientist exploring a remote area of a tropical rain forest discovers an
Fantom [35]

Answer:

This organism will be placed in kingdom Animalia, phylum Arthropoda and class Araneae because it has same characteristics to spider and spider also belongs to class Araneae.

Explanation:

Organisms which belongs to class Araneae is known as Arachnids. These organisms are invertebrates and have two body parts i. e. cephalothorax and the abdomen. They have eight legs.

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