Which characteristic is common to all three groups of mammals? They require little or no parental care. They develop partially or fully inside the mother’s body. They have long gestation periods. They are always endotherms.

They develop partially or fully inside the mother's body. They have long gestation periods. Which characteristic is common to all three groups of mammals? They are always endotherms.

Explanation:

They develop partially or fully inside the mother's body. They have long gestation periods. Which characteristic is common to all three groups of mammals? They are always endotherms.

Explanation:

i am going to put the answers in order i dint feel like typing it out so yeah

a

d

c

b

b

b

a

d

a

b

c

c

c

b

d

gas

explanation:

smoke is the matter of a gas