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).
Tadpoles have gills allowing them to breathe underwater while frogs have lungs. Tadpoles have tails and fins to help them swim while frogs have arms and legs.
Comparative and experimental investigations are two of three scientific investigations, the other is descriptive investigations.
--hope this helps--
<span>All planets revolve around the sun. - Incorrect. There are many planets that revolve around other stars.
</span>
La hepatitis B es un virus, una infección de su hígado. Puede causar cicatrización del órgano, insuficiencia hepática y cáncer.
