Answer:
The arrector pili muscles contract (piloerection) and lift the hair follicles upright. This makes the hairs stand on end, which acts as an insulating layer, trapping heat.
the answer should be c, as ecologists study the affect of organisms on an environment
Answer:
they should just contain the same considering they are still sperm sells. so c.
It is called a Dosimeter. Hope this helps.
The answer is; opioids
These painkillers relieve pain by competing with neurotransmitters in binding neurotransmitter receptors in the synapse. However, they don’t induce an impulse hence block the receptors from neurotransmitters. This working principle, however, is also problematic because it causes slow breathing because the drugs calm nerve activity even that which controls your breathing.