Answer:
The spectrum of a star shifts towards the blue region when the star moves towards Earth.
Explanation:
This is referred to as the Doppler shift effect. As the star moves closer to the observer, the wavelength of light it produces is ‘compressed’ hence changing its relative frequency (just like the pitch of the siren of an ambulance approaching you).
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Proteins
Explanation:
Proteins are the most diverse biomolecule on earth, performing many functions required for life. Protein enzymes are biological catalyst, maintaining life by regulation where and when cellular reactions occur.
-antibodies are proteins that are synthesized by an animal in response to the presence of a foreign substance in our body called an antigen. They play a great role in the immune system and are usually found in blood and other bodily fluids.
Answer:
A tissue.
Explanation:
A group of similar cells organized to perform a particular function is a <u>tissue</u>.
Answer:
Overproduction, Variation, Selection, and <em>Competition</em>
