How do scientists classify animals? Check all that are true.
2 by their adaptations
how they develop
- O how they perform cellular respiration
by their DNA
O by their body structure

Explanation:

You can classify items in all kinds of ways--size, shape, purpose, color and so on. Scientists use this skill to organize information and objects. Scientists group or classify animals by characteristics that they all have in common.

i am positive it is c. condensing but i may be wrong

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