I've got a few questions..
How do cells grow and reproduce to maintain homeostasis?
What is another name for cell division?
How does removing waste help maintain homeostasis?
(this is being reposted as someone reported it for the wrong subject, and told me not to cheat of homework and stuff.. this doesn't even count for a grade, its notes..)

What are some natural measures of time

How to draw a diagram to represent a calcium metal lattice?

Bridget is in science class. her teacher gives her two unknown substances and asks her to determine their relative ph. she places a piece of red litmus paper into both substances. the litmus paper turns purple when she places it into substance i. the litmus paper turns blue when she places it into substance ii. a. substance i is a neutral substance and substance ii is an acid. b. substance i is a neutral substance and substance ii is a base. c. substance i is an acid and substance ii is a base. d. substance i is a base and substance ii is a neutral substance.