What are index fossils and how are they used to find the age of a sedimentary rock

Excess amounts of urea, creatinine, and uric acid in the blood:

Leonardo is explaining the ecological pyramids to his daughter. He tells her that often scientists do not favor pyramid of biomass. Why would he say that? A. because the available biomass may be less than the actual energy provided B.

Ocean coring: is the best technique for sampling the ocean floor uses high energy pulses to penetrate the bottom layers of rock is used to study the effects of turbidity currents or all of the above?

What is the action of the quadratus lumborum?

A bacterial cell is suddenly expelled from a warm human intestine into the cold world outside. Which one of the following adjustments might the cell make to maintain the same level of membrane fluidity that the cell had in the intestine? a.

Why was the evolution of a coelom a critically important innovation for animals? a) The coelom can act as a hydrostatic skeleton. b) The coelom gives rise to a complex nervous system. c) The coelom made it possible for animals to colonize land.

Marine mammals, with a few exceptions, are a. oviparous b. ovoviviparous c. viviparous

The process by which organ systems maintain a relatively stable internal environment

Which cells in your body contain your entire DNA code? A) Nerve cells only B) Brain Cells Only C) All your cells

Which of the following is a scientific question