Certain gases in the atmosphere trap heat on Earth.

What is the name of this phenomenon?

the greenhouse effect

cooling period

global warming

glacial melting

Which describes a similarity between abiotic and biotic factors? A. They may include things that where once living. B. They are both necessary for organisms to survive. C. They are not usually important parts of the environment. D.

Which event happened first? a. Christopher Columbus explores islands in the Caribbean for Spain. b. Henry Hudson claims land in North America for the Dutch. c. Amerigo Vespucci explores South America for Portugal. d.

Results in four daughter cells, each with half the number of chromosomes of the parent cell, as in the production of gametes Segregation Fertilization Meiosis Mitosis

has four pairs of chromosomes what proportion of gametes would be expected to contain some chromosomes from both parental and maternal origin? assume that there is no crossing over

What is the difference between vertebrates and invertebrates

An ecologist studying ecosystems would be most interested in which question? a. how do features of the landscape affect the movement of bears? b. how does temperature affect survivorship of marmots? c.

What are the functions of Proteins? Carrying the genetic code Many functions of the body, including enzymes. Short-Term Energy / Structure Long-Term Energy / Cell Membranes

A marine biologist dredges up a small animal from the bottom of the ocean. It is uniformly segmented, with short, stiff appendages and soft, flexible skin.

16. What is the chemical basis of depolarization?

What are the pros and cons of evolution?