The correct answer is - D) covered by warm shallow seas.
The fact that the crinoids are have an abundance in the fossil records in Pennsylvania in the Mississippian Period, tells us that this area was covered with shallow and warm seas. The reason why we can get that conclusion is that the crinoids live only in that kind of environment, so it simply a logical conclusion.
The geological data is also confirming this, as it is easily noticeable in the layers that during this period of the geologic past, what is now Pennsylvania, was covered with shallow sea waters. Also, this waters were warm too, as the climate was warm and humid and that period, so it was a perfect environment for the crinoids to flourish.
Answer:
During exercise, your heart typically beats faster so that more blood gets out to your body. Your heart can also increase its stroke volume by pumping more forcefully or increasing the amount of blood that fills the left ventricle before it pumps.
The probability of the guine pigs blend black is 2-3
Answer:
Naci is a dangerous acid. For ex suphiric acid . when you test this acid you realised that' it is dangerous because of its widespread use. Naci means Nitric acid collide with other acid that don't make any reaction with other acid.Its has own reaction With sodium hydroxide forms to perform a neutral solution.
It is important to prioritize and maintain a patent airway. This will apply the ABCD of emergency medicine. It is important to prioritize airway, breathing, circulation and presence of disability. Magnesium sulfate must administered for active seizure. Acute treatment of hypertension must be done by administering hydralazine. Fluid management is important excessive fluids can lead to pulmonary edema or congestion. Diuretics must be avoided. Monitoring of fetal heart tone and movement must be strictly observed.
