PL NEED ASAP A geologist finds some tilted sedimentary rock layers. Which conclusion can the geologist draw by looking at the rock layers?

A. Their absolute age is 600 million years.

B. They were tilted before they were deposited.

C. They were originally deposited horizontally.

D. The youngest layer was originally deposited as the bottom layer.

Lactase is essential for digesting lactose in milk. this enzyme is specific for this sugar. why? molecules and active sites vary in size; only properly sized molecules can fit.there is a precise compatibility between the active site and the lactose molecule.specificity refers to the action of the enzyme, such as hydrolysis, and relatively few molecules can be hydrolyzed.reaction-specific enzymes assume a fit by folding around the most numerous substrate molecules.

What does spontaneous generation mean?

Which statement best describes the first stage of cellular respiration? check all that apply