Why is natural selection often referred to as "survival of the fittest?

Multiple questions: 16. In what part of the leaf are the chloroplasts found? 17. What does the cuticle protect the plant from? 18. What type of tissue surrounds the chloroplasts and the xylem and phloem?

Which structure in the kidneys' nephrons is mainly responsible for the filtration of the blood?

A sporophyte stalk is formed of: a. Haploid cells c. Gametes b. Eggs d. Diploid cells

Describe how desertification has impacted the environment of Latin america

Which type of bond holds the hydrogen atoms and oxygen atom together in a single water molecule? ionic bond nuclear bond organic bond covalent bond

What is the most likely cause of plate movement? A) radiation from the sun B) cold air currents on earths surface C) heat convection within the earth D) movement of ice sheets

The closer together a magnet's magnetic field lines are, a. the weaker the magnetic field. b. the stronger the magnetic field. c. the closer they are to the magnet's center. d. the closer they are to disappearing.

What are two things that carbohydrates and lipids have in common? A. Both contain C, H, O and N and are formed by dehydration snythesis. B. Both contain C, H, O and serve as a source of energy. C.

Stellar equilibrium is a balance between what two things? A. Outward and inward gravity. B. Outward pressure from light and inward pressure from heat. C. Outward pressure from hydrogen and inward helium. D. Outward pressure and inward gravity

Which genotype represents a homozygous dominant allele? HH Hh hh