Answer:
Changes that occur in species, over a long period of time and that include the the replacement of unfavorable characteristics by helpful variations lead to evolution (second option).
Explanation:
Evolution, in terms of biology, consists of the genetic, anatomical and functional changes that occur in individuals of different species, acquiring useful characteristics that replace unfavorable characteristics, due to processes such as natural selection, proposed by <u>Charles Darwin</u>.
<u>Biological evolution</u> raises the existence of a common ancestor, from which all current known species are known, and an evolutionary line for each of those species. Evolution is considered the basis of <u>biodiversity</u>, due to the genetic changes it has produced over many years.
Learn more:
Evolution brainly.com/question/1596703
The inside of a stomach is coated with a lining that protects it.
This lining is made up of cells called epithelial cells. They coat the stomach with a mucus that neutralizes the acid.
The mucus contains bi-carbonate (a base), similar to baking soda.
Acid + Base = water and salt
So, that’s why taking tums or swallowing baking soda water helps an upset stomach.
When your stomach is upset, it means there’s too much acid. Taking a tums neutralizes that overproduction eating also helps to absorb the excess acid.
Answer:
13n
Explanation:
basically goes by .2 and divide so 2.6 or 26/2=13
Answer:
NK cells<em><u> perform all of these roles</u></em>
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hope this helps
-lvr