What is the name for the muscular contractions that push food through the digestive system?

A. Villi

B. Peristalsis

C. Elimination

D. Pepsin

DNA is the code for making of proteins used for blank and blank

Which statement would least likely be used to describe variation?

Farmers are often known for using nitrogen rich fertilizers to ensure ideal crop yields but this also often leads to an increase of which of the following? A. Burning of fossil fuels resulting an increase in emissions of greenhouse gasses B.

How does global warming cause extinction of species?

What kind of growth describes plant growth throughout the life of the plant?

Which of the following are made of repeating sugar units? Choose all answers that are correct. A. nucleic acids B. carbohydrates C. proteins D. lipids

Identify four organelles that should be present in the eukaryotic organism and describe the function of each organelle.

Animals respond to threats in their environme the result, mostly, of interactions OD 3 C A. the circulatory system and the reproductive syste O B. blood circulation and hormone production the nervell system and the muscular D. respiratory rate

A phospholipid is a common type of lipid molecule that is hydrophilic at one end and hydrophobic at the other. Explain how this structural characteristic of a phospholipid contributes to the formation of plasma membranes.

A school nurse is assessing children in the third grade for pediculosis capitis. what assessments should be made?