Look at this picture of a frog. Which sphere does the frog belong to?
O atmosphere
O biosphere
O geosphere
O hydrosphere

Suppose that a comet that was seen in 563 a.d. by chinese astronomers was spotted again in year 1951. assume the time between observations is the period of the comet and take its eccentricity as 0.986. what are (a) the semimajor axis of the comet's orbit and (b) its greatest distance from the sun?

What’s #16 asking me and how do i solve it?

Which is a substance that can be separated by physical means and is not the same throughout