Which of the following is true about the color of a substance? 1. it is the only information needed to identify a substance
2. it helps to identify a substance but by itself is not a significant indicator of what the substance is
3.it is a chemical property of a substance
4.it never changes

1

Explanation:

It identifies the substance.eg a milk is a creamy liquid substance so the creamy color make us identify the milk

your best option is 5,000 kg

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