How many people currently live on planet Earth?

A) 1 million

B) 6 billion

C) 100 billion

D) unknown

Scientists think that oxygen produced by the first photosynthetic bacteria contributed to the creation of the ozone layer we have today.

What is a chemical property of metal

What would most likely happen if the number of shrimp increased?

What compound is the human body unable to synthesize, but is essential in lowering blood pressure and blood levels of harmful lipids?

A client is admitted to the psychiatric inpatient unit after being found walking on a highway at night talking to herself. the client is unkempt and appears thin and dirty.

Which statement best describes the relationship between activation energy and rate of reaction? O Increasing the activation energy can increase the rate of a reaction. O Reducing the activation energy can increase the rate of a reaction.

Definition: this is a haploid cell with half the reproductive information from the parent.

Does a cell use energy when molecules diffuse in or out of the cell? Why?

Below is a list of possible challenges. Check all errors that you mentioned in your answer. Traits other than beak type might affect natural selection. It could take many generations to observe adaptions to a population.

A farmer dug a well but did not find any water Which reasons most likely explain why the farmer did not find water? Check all that apply.