The biotic and abiotic factors interacting with each other in a pond form
A) an ecosystem B) a community
C) a population D) a food web

1. b.

2. d.

3. a.

5. d.

6. c.

these are the only ones that i know, i hope this , and good luck.

the answer is 100% density i've answered this question before and done the quiz myself.

the statements that apply here about binary star system are

"have stars that might appear to wobble"

"often have one star that is brighter than other"

a binary star is a star system consisting of two stars revolving around their common barycenter. systems of two or more stars are called multiple star systems.