Answer:
<u>Barbara must be suffering from tension headache.</u>
Explanation:
<u>Tension headaches </u>are caused due to stress, here in this case Barbara is stressed because of excess workload and low productivity. Tension headaches are a type of primary headaches and its intensity increases gradually. the pain can travel from head to neck.
(Primary headaches: These headaches are not caused as a result of any other medical problem.)
Answer:
In population genetics, the founder effect is the loss of genetic variation that occurs when a new population is established by a very small number of individuals from a larger population. In extreme cases, the founder effect is thought to lead to the speciation and subsequent evolution of new species. No duh :D
Explanation:
Answer: Look below =3
Explanation: Most of the water that evaporates from the oceans falls back into the oceans as precipitation. Only about 10 percent of the water evaporated from the oceans is transported over land and falls as precipitation.
I hope this helps! =3
Petrifaction happens jvgocg igcgicigcicg