Answer: More than 99 percent of all organisms that have ever lived on Earth are extinct. As new species evolve to fit ever changing ecological niches, older species fade away. But the rate of extinction is far from constant. At least a handful of times in the last 500 million years, 75 to more than 90 percent of all species on Earth have disappeared in a geological blink of an eye in catastrophes we call mass extinctions.
Though mass extinctions are deadly events, they open up the planet for new forms of life to emerge. The most studied mass extinction, which marked the boundary between the Cretaceous and Paleogene periods about 66 million years ago, killed off the nonavian dinosaurs and made room for mammals and birds to rapidly diversify
Answer:
The correct answer would be a loss of sensation to pressure and touch.
The dorsal column-medial lemniscus pathway abbreviated as DCML refers to the sensory pathway of the central nervous system (CNS) which transmits sensations of vibration, fine touch, proprioception, and two-point discrimination from the skin as well as joints.
Thus, injury to the dorsal column would result in the loss of sensation to touch and pressure.
Answer:
Aspiring clinical geneticists must complete a bachelor's degree program, and earn a Doctor of Medicine or Doctor of Osteopathic Medicine at a medical school. After earning a doctoral degree, geneticists participate in a medical residency in genetics to gain specialized training.
Answer:
It is H
Its so easy no need to explain. Just look at the pic
I thinking A. or B. but im sure it one of them. that's a 50% chance.
