Which characteristic of water allows for a spider to glide across the top of water due to the strong hydrogen bonds among water molecules

The answer is surface tension as cohesive forces between liquid molecules are what is responsible for surface tension

they each offer a fresh glut of resources to the organisms that can arrive and exploit them. as individuals and new species continue to appear, they actively and passively alter the environment. competition for shared resources increases, local abiotic and biotic conditions shift, and the relative abundances of species change accordingly. the process is called ecological succession, and it is one of the earliest and most well-known concepts in ecology.

"do a testcross with a homozygous recessive plant."