Why did Antarctica's climate change approximately 50 million years ago?

When biodegradable materials decompose without access to air, they produce A. Carbon dioxide B. Methane C. Acid rain D. Pesticide

Which of the following is NOT a factor that determines if a volcano erupts explosively or quietly? A. the magma's composition B. temperature of the magma C. size of the volcanic cone D. amount of dissolved gases in the magma

What is an example of an autotroph and a heterotroph?

How does irradiation effect tomatoes

9. Which explains how the advantage of genetic variation through sexual reproduction occurs? A. One of each pair of chromosomes comes from each parent. B. The union of sperm and egg occurs during meiosis. C. Meiosis occurs in all body cells also. D.

Select the correct answer, in Watson's Little Albert Experiment, what does the loud metal clanging noise represent? A. a neutral stimulus B. an unconditioned stimulus C. an unconditioned response D. a conditioned stimulus E. a conditioned response

In a population of turtles, the allele that causes a yellow shell (y) is dominant to the allele that results in a red shell (y). if the dominant allele is present in the population at the 0.

An allele is one of the alternative forms of a gene that governs a trait. If a fern plant is heterozygous for a particular trait, how can the alleles that control that trait be described? A. one dominant, one recessive B. two dominant C.

In order to survive, all organisms must carry out 1) autotrophic nutrition 2) heterotrophic nutrition 3) enzyme-controlled reactions 4) the process of reproduction

Compare and contrast a plant cell with an animal cell. Make sure you give at least two comparisons and two differences.