Answer:
e. whether or not the impulse begins in the CNS
Explanation:
Nerve impulse is action potential movement through the axon. Nerve impulse propagation has its velocity (speed at which nerve impulse travels down the axon) which depends on many factors. For example, myelination increases the conduction velocity. Also, the larger the diameter of an axon, the higher the velocity is. Nodes of Ranvier present on the axons, and myelin sheath between the nodes act as a good electrical insulator which also increases the velocity.
C. Changes to biodiversity can positively and negatively affect an ecosystem.
Answer:
Step 1: Define your variables.
Step 2: Write your hypothesis.
Step 3: Design your experimental treatments.
Step 4: Assign your subjects to treatment groups.
Answer:
It supposed to be answer B)
Explanation:
Summer happens in the hemisphere tilted towards the Sun, and winter happens in the hemisphere tilted away from the Sun
