On average, adolescents need how many hours of sleep each night for proper growth and brain development?

A. 12

B. 9

C. 5

D. 7

An electrical discharge between a cloud and the earth's surface

Which of the following are included in the binomial name given to an organism? a. Kingdom, Family b. Species, Family c. Order, Genus d. Genus, Species

In humans, the small intestine can be over 8 meters (26 feet) long. Why is the organ so long

The effect that toxins have on a body depends on which of the following? Mutagens Carcinogens Teratogens All of these

What structure in a bacterial cell controls which substances enter and leave the cell?

What are the steps (in the correct order) that link a change in the base sequence of a gene to a change in the phenotype of an organism like a mouse or a human? see section 16.2 (page 339).

A plant with two dominant OR two recessive alleles is said to be True breeding Cross pollinating Homozygous Heterozygous

How is it possible to say that there are 2.3 deer per square mile

Which species is an example of an autotroph? a. ladybird c. frog spawn b. bumblebee d. lotus flower

What can be inferred from the phylogenetic tree shown? A) Flagellates and Animals are more closely related than Fungi and Animals. B) Ciliates and Diplomads are more closely related than Plants and Ciliates.