Which type of bond is very important to living things, because it is weak, but does allow things to "stick together"? covalent bond ionic bond hydrogen bond compound bond

Hydrogen bond. Although other ones are equally as important such as a dipole-induced dipole

This is what i found on google “phytoplankton, tiny organisms that live in the ocean, are autotrophs. some types of bacteria are autotrophs. most autotrophs use a process called photosynthesis to make their food.” i hope this you for what your looking for