Gradual changes in the frequency of diseases over long periods are known as SECULAR TIME TRENDS. For example, the rate of mortality in USA due to coronary heart diseases over a period of time. Onset of puberty in girls is also a secular time trend.
Secular time trend is also referred as Secular Variation and Secular Drift.
Yes just like a snake the shed their skin to grow like a outer shell
E. 100%
if you cross BB and bb all of the squares would contain on B (that are brown eyes)
Answer: they would have diarrhea, stomach cramps, vomiting, and a fever.
Explanation: