Why is evolution is still a theory?

The United States government does not allow travelers from foreign countries to bring plants, fruits, vegetables, animals, or other living organisms into this country. State one biological reason for keeping these out of the United States.?

What does unacceptable mean

How does a paramecium control its temperature?

Which of these best describes Earth's mantle? A. Most dense layer, consists of the outer and inner parts B. Thinnest under the oceans and thickest under continents C. Middle layer, density increases with depth as pressure increases D.

Proteins that resemble spools on which dna molecules are wound are called

While Michael is sleeping, his eye muscles are moving, but all other skeletal muscles are at rest. Which of the following statements about Michael is true?

Which statements describe ways that science meets society's needs? Check all that apply A scientists investigate a new way to clean up spilled oil on land B scientist developed a procedure to collect water samples for experiments C scientist improve

if memory cells are always present after the first exposure to a virus, then why do people get the flu every year?

Why did scientist who study weather need more advanced technology

Describe how do organisms with a favorable trait increase in proportion compared to those lacking the trait