In frogs muscle tissue is usually grouped into large

The correct answer is bundles found in the leg.

Explanation:

The anatomy of frog shows that muscles in the legs of the frog are usually grouped into large bundles which helps in the movement of the frog.  Muscles in the thigh or upper leg help in moving the calf or leg and in the lower leg helps in the movement of the frog’s foot.  

Thus,  bundles found in the leg is the correct answer.

climate change and pollution

endo:

regulates body hormones, aldosterone, vasopressin

neural:

signal, regulates body using electric signals, reflex

endo has to do with hormones; aldosterone and vasopressin are both hormones. i also had this question and got it right : d