How did Kelplers describe the planets orbit A. The planets orbits are circular
B. The planets orbits are elliptical
C. The planets and the orbit earth
D. The planets have miniature orbits called epicycles

What is the standard unit of measure for acceleration?

Citric acid has a ph between 1 and 3.  it is considered to be aa. weak acidb. weak basec. strong based. strong acid

2. what two items do autotrophs take from the environment to produce their food? 3. what are the two items that are released during transpiration from leaves? 4. what are the two membranes of the system? a.what are the two stages of photosynthesis? what are the two parts of photosynthesis?