B goes to the second one A goes to the first one D goes to the third one and C goes to the fourth one I believe. I hope that helps
Answer:
Once a person has developed mumps they remain immune to that disease for the rest of their lives. Therefore if they come in contact with the virus again their immune system recognises the virus and eradicates it. To improve your immune system you can eat healthy and exercise often.
Explanation:
The answer is; permeability
This is the property of a material to allow fluids to pass through them without being changed physically or chemically. The membrane of the cell is referred to as semi-permeable because it allows only particular fluid through it depending on the pore size of the cell membrane. Particles that are larger in size can only be taken up by active transport such as by endocytosis.
Answer:
The correct answer is - natural selection process does not move simply to an optimized endpoint.
Explanation:
Natural selection is a process of evolution that helps in evolving populations that are adapted to successfully reproduce and survive according to the environment.
Natural selection does not march simply to an optimized endpoint. Natural selection works upon individual organisms that have advantageous characteristics in specific environments. If the environment changes the advantages can become disadvantageous.
Thus, the correct answer is - natural selection process does not move simply to an optimized endpoint.
The trachea is a single tube through with oxygen passes to the double-tubed bronchi as we breathe air inside. The two tubes of bronchi are called left and right bronchi and are often termed as alveoli and bronchioles
I believe the answer is B!
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Hope this helps
