Answer:
Earth (From order to crust to inner core)
Crust
Mantle
Outer Core
Inner Core <----Most inner layer
Answer:
4
Explanation:
How do (sensory) receptors send messages to the brain?
Via (sensory) neurons
Answer:
Option A, Key stone
Explanation:
A keystone species plays a major role in an ecosystem as it is the species whose presence effects all other species in the ecosystem .In general a keystone species is always a dominant predator that feed on prey population. If it is removed, the prey population will explode and the population diversity will reduce. For example - bison, prairie dog etc.
Hence, option A is correct
There is a messy and water is everywhere.
Explanation:
