Answer:
Sandstone does not react with Hydrochloric acid. The acid soaks into the rock because the rock is porous, filled with tiny holes. It is made up of tiny grains of sand cemented together by intense pressure.
Answer:
No it hasn't been recommended by a doctor.
Explanation:
This is considered pseudoscience because there is no proof that it has been scientifically proven.
Question in English:
The concept of gene flow is demonstrated when a cow is expelled from her herd, joins another herd, and reproduces. When the cow contributes to the gene pool of the new herd, which of these is most likely to increase?
A. Natural selection
B. Genetic variation
C. Environmental suitability
D. Reproductive mutations
Answer:
B. Genetic variation/Variación genética
Explanation:
When an organism from one population enters a new population that does not normally mix, it brings with it its own unique genetic variation.
Its new alleles are introduced into the new population when the cow breeds, enhancing the amount of gene variation in the new herd. This is how gene flow increases variation
What part did you need help understanding? Your definition is pretty strong- the epiglottis keeps food from entering the trachea and lungs. It also opens during breathing to allow air into the lungs. Good luck on your test, let me know if you need anymore refreshers!
