Which explains why the reflex reaction is important in certain situations?
O
A. The brain has no control over motor neurons.
O
B. Sensory neurons do not use neurotransmitters to send signals.
O
C. Motor neurons cannot form action potentials.
O
D. Interneurons are too slow at sending signals through the spinal
cord.

answer: land bridge theory. land bridge theory held that shifting portions of dry land explained the finding of identical species on different continents. plate tectonic theory eventually eliminated the land bridge theory.

answer: 21

step-by-step explanation:

divide 630 by 30. 30 goes into 630 21 times

because the light is a great source of energy for the plants to survive. (i hope this )

succession returns a disturbed

ecosystem to a more stable state. this is also classified into two (2) types:

primary succession and secondary succession. the primary succession arises when

a new land is transformed and a bare rock has been exposed providing an environment

that can be occupied for the first time. while, secondary succession occurs

when a previously occupied environment was disturbed that kills much of all its

community

explanation: