Answer:
The correct answer is B. Worms move through changes in body structure caused by contraction of muscles compressing their watery fluid.
Explanation:
The hydroskeleton consists of a fluid-filled cavity, surrounded by muscles. The fluid pressure and the action of the muscles that border it, serve to change the body's shape and produce a movement such as digging or swimming. The successive contraction of various metamers, which are provided with bundles of circular and longitudinal muscle fibers, stretching and thickening parts of the body, allow it to move horizontally. Hydrostatic skeletons have a role in the locomotion of annelids, nematodes and other invertebrates. The hydroskeleton has similarities with the hydrostatic muscles.
Answer:
Descenso común describe cómo en biología evolutiva un grupo de organismos comparte un ancestro común más reciente. Hay evidencia de descendencia común de que toda la vida en la Tierra desciende del último ancestro común universal.
Explanation:
<span>Challenges:
1. Vietnam
2. The worst economy since the Great Depression
3. Communist Europe (the Helsinki Accords)
4. Richard Nixon
One month after taking over the presidency, Ford pardoned Nixon. This
caused a lot of controversy but Ford claimed he did it to save the
nation from the prospect of a long, messy, and divisive trial.
In 1974, President Ford also offered clemency to those who evaded the
draft during the Vietnam War if they would swear allegiance and perform
two years of public service. Similarly, those who deserted during the
war could return for two years in the branch they left to achieve
clemency. However, Ford was criticized both by those who felt he was
being to easy on the draft dodgers and those who had avoided the service
because they felt they were in the right.
In 1974, Ford asked for aid to be sent to South Vietnam as fighting had
resumed. Congress would not agree. In April 1975, Saigon fell and by
1976, North and South Vietnam were united into one country.
Ford escaped two assassination attempts, both by women. First on
September 5, 1975, Lynette Fromme, a follower of Charles Manson, pointed
a gun at him but did not fire. She was convicted of attempting to
assassinate the president and sentenced to life in prison. The second
attempt on Ford's life occurred on September 22, 1975 when Sara Jane
Moore fired one shot that was deflected by a bystander. Moore was trying
to prove herself to some radical friends with the assassination of the
president. She was convicted of attempted assassination and sentenced to
life in prison.</span>
<span>The best place to test the pulse is just below the base of the thumb, on the wrist. This allows the person to continue their exercise while still being able to check the pulse rate and see if it has reached the level they are desiring.</span>
