What is a fossil?

an animal or plant that is extinct

the bones of a dead organism

an animal or plant that cannot evolve

the remains of an ancient organism

a group of different species that live in the same habitat and interact with on another

Which of these locations on earth experiences at least change in the number of daylight hours throughout the year? a. North pole b. terrestrial equator c. tropic of Capricorn d. tropic of Cancer e) South pole

A baby that sleeps with a bottle filled with formula has an increased risk for

Examples of selectively permeable

Impulses are conducted by myelinafed axons by jumping from node to node in a process called a (n): a. action potential. b. excitatory postsynaptic potential. c. saltatory conduction d. monosynaptic reflex e. depolarization.

The same reptile known as a river turtle in illinois is called a cooter in florida. This language phenomenon is classified as

In rats, gene B produces black coat color if the genotype is B-, but black pigment is not produced if the genotype is bb.

Gregory is studying Lake Mairead. The lake has clear water and supports a healthy community of algae, fishes, and other aquatic organisms. Gregory hypothesizes that phosphorus is a limiting nutrient in the lake.

the distance between the Earth and the Sun is quite large. Which numbers are correct distances between them? Check all that apply.

Does nonpolar mean hydrophobic or hydrophilic