Answer: A S-shaped curve is called a(n) logistic growth curve (Option A)
The phases of logistic growth curve include
:
1. lag phase ( where the initial growth starts
)
2. Rapid growth phase / exponential growth phase
3. Stable phase (which is the stabilizing factors limit growth)
Logistic growth curve is an “s” shaped curve. Once the carrying capacity ( it is the maximum population size that an environment can support) is reached by an organism then it becomes logistic.
The neurotransmitter in the body
which prepares it for "fight or flight" reaction is EPINEPHRINE. The
level of Epinephrine is remarkably high in patients who have anxiety-related
disorders. Also known as adrenalin or adrenaline, epinephrine is a hormone and at the same time a neurotransmitter; it is also used as medication.
Crossing over is a biological occurrence that happens during meiosis when the paired homologs, or chromosomes of the same type, are lined up. Hope this helps :)