Why do we not have many fossil records from the precambrian era?

A woman with ab blood type and a man with blood type o have three children, one of whom is adopted. the blood types of the children are a, b, and o. what is the blood type of the adopted child?

Which organelle modifies and packages proteins for transport

What is common between the environmental changes of ice ages and global warming? A. They influence global temperatures in the same way. B. They have the same causes. C. They can lead to extinction. D. They disrupt the same species in the same ways.

What might happen if a plant that normally grows good in one environment that does not grow well in a different environment

Why do multicellular organisms need levels of organization?

The formula for carbohydrates is C n H 2n O n. Which statement accurately describes this general formula There are twice as many hydrogen atoms as carbon atoms There are more carbon atoms than oxygen atoms The ratio of the atoms is 1:1:2 in the

Why is ATP an important molecule in metabolism? A) Its hydrolysis provides an input of free energy for exergonic reactions. B) It provides energy coupling between exergonic and endergonic reactions.

Sensory information enters the spinal cord through the

The following are all true of organism in the Eubacteria Kingdom, except

All of the gray squirrels and red squirrels that inhabit an oak forest describes a / an