Which of Earth's systems are humans part of? A) atmosphere
B) the hydrosphere
C) the part of the biosphere that doesn't include the biota
OD) the biota portion of the biosphere

C) The part of biosphere that doesn't include the biota

Explanation:

Humans are part of the biosphere, although they are increasingly responsible for the creation of systems that may be largely artificial (such as cities).

one characteristic that is shared by all is a soft body. many

of these invertebrate animals also have an outer shell to protect their

body. oysters, clams, snails, and mussels are all mollusks. so are octopuses, squids, and slugs. mollusks live on land and in freshwater.