What was the second organism to be found here on planet Earth?
- <em>Prokaryote</em><em>s</em>
<u>The</u><u> </u><u>prokary</u><u>otes</u><u> </u><u>are</u><u> </u><u>considered</u><u> </u><u>to</u><u> </u><u>be</u><u> </u><u>the</u><u> </u><u>most</u><u> </u><u>oldest</u><u> </u><u>on</u><u> </u><u>earth</u><u>.</u><u> </u><u>The</u><u> </u><u>first</u><u> </u><u>found</u><u> </u><u>organism</u><u> </u><u>on</u><u> </u><u>earth</u><u> </u><u>was</u><u> </u><u>bacteria</u><u> </u><u>and</u><u> </u><u>then</u><u> </u><u>many</u><u> </u><u>other</u><u> </u><u>Prokaryotes</u><u> </u><u>were</u><u> </u><u>found</u><u>.</u><u>.</u><u>.</u><u>~</u>
I think the correct answer from the choices listed above is option A. Directional selection can be distinguished from disruptive selection by the elimination of extreme variations of traits. Directional selection is a natural selection where an extreme phenotype is favored than others.
Answer:
C
Explanation:
The major histocompatibility complex (MHC) is a group of genes whose function is to codify proteins that participate in the immune response, helping the system to <u>recognize foreign substances to develop an immune response</u>.
<u>Histocompatibility or compatibility of tissue </u>is given by self-identifications molecules (antigens) located on the surface of cells, membrane, these molecules are almost <u>unique to each person</u>, letting the body to distinguish self from non-self.
Answer:
Gills
Explanation:
In order to remove oxygen from the water, they rely on special organs called "gills." Gills are feathery organs full of blood vessels. A fish breathes by taking water into its mouth and forcing it out through the gill passages.
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How Do Fish Breathe