What is the amount of starlight received on earth

An easy way to calculate the amount of energy available at each level is to what?

How does a gymnosperm prevent itself from pollinating the same tree

1) strawberry plants typically reproduce by making runners, which are miniature versions of themselves, that grow off of the roots and stems of the parent. this type of vegetative reproduction is known as a) pollination. b) fragmentation. c) binary fission. d) vegetative propogation.