Theories are backed up with lots of data, evidence, and observations from many
people over time.
true
false

True

Explanation:

A theory is the detailed explanation for the cause of processes and events that occur naturally.

These are supported by the evidences obtained from experimental trials. The information of the theory can be changed by new evidences obtain by people by applying the principle and methodology of the theory.

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.