The answer is A: Mass extinction.
"Abrupt disappearance of many land and marine species" = extinction of many species.
Answer: 1-TT, 2-Tt, 3-Tt, 4-tt
Explanation: It is pretty simple. you just have to match every letter together. Also, the genotype of this is 50% Tt (which is crossbred), 25% TT (which is tall), and 25% tt (which is short).
I hope this helped you out!
Crease, could you mark brainliest? :)
Anatomy of a Wave
A wave is described by its wavelength (or the distance between two sequential crests or two sequential troughs), the wave period (or the time it takes a wave to travel the wavelength), and the wave frequency (the number of wave crests that pass by a fixed location in a given amount of time
Answer:
c) adrenocorticotropic hormone (ACTH).
Explanation:
A tropic hormone is defined as the hormone which is secreted from one gland and acts on another gland. ACTH is released by anterior portion of our pituitary gland during the condition of biological stress. After it is released, it acts on adrenal gland so that adrenal gland could secrete another hormone named as cortisol (steroid hormone). In response to stress, cortisol increases blood sugar level, elevates brain's use of glucose etc. so as to counter stressful situation.
Apart from this cortisol also helps in regulating our metabolism, reduces inflammation and controls salt and water balance.
