<span>Mutations sometimes improve the chances of survival for an animal.
But rather rarely. Advantageous mutations do happen, but neutral and harmful mutations are way more common.
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Answer:
On January 22, 2001, EPA adopted a new standard for arsenic in drinking water of 0.01 mg/l or 10 parts per billion (ppb), replacing the old standard of 50 ppb. Water systems had to meet the new standard by January 23, 2006.
Explanation:
The carbon dioxide escapes, and bubbles forth as a gas. Baking soda and vinegar react<span> with each other because of an acid-base </span>reaction<span>. </span>Baking soda<span> is a bicarbonate (NaHCO3) and </span>vinegar<span> is an acetic acid (HCH3COO)</span>
Answer:
A
Explanation:
messes with the chromosomes
Answer:
objective lenses
Explanation:
objective lenses with different magnifications, screwed into a circular "nosepiece" which may be rotated to select the required lens.
