Answer:
There are three types of endocrine cells;
Explanation:
; alpha cells which secrete glucagon, beta cells which secrete insulin, and delta cells which inhibit the secretion on glucagon and insulin: Glucagon increases the blood glucose level by stimulating the liver causing convert Glycogen into Glucose (sugar).
Answer:
red and white
Explanation:
the molecules form a triangle not a line
Answer:
option 2
Explanation:
for the scientist to come to the conclusion that fossil B was older means that he found the fossil deeper in the earth than fossil A