Classifications today are made on the basis of ...

A. The flower of plants

B. Ways that animals reproduce

C. Likenesses

D. Similarities and differences

Urgent: taking a quiz!

Earth's tectonic plates A. are constantly in motion. B. move only once. C. move only up and down. D. do not move.

Which of the space missions visited the moon several times? Voyager 1 Gemini Mercury Apollo

Insect wings may have begun to evolve as lateral extensions of the body that were used as heat dissipaters for thermoregulation. When they had become sufficiently large, these extensions became useful for gliding through the air.

Which characteristics belong to a eukaryote? is usually multicellular contains a nucleus contains one cell type contains membrane-bound organelles

Which cell structure serves the stated function in both eukaryotic and prokaryotic cells?

Which of the following is an intrusive igneous body A. pyroclast B. lathar C. batholith D. lava flow

Nephrons are part of which of the following structures?

Brown hair is dominant over red hair. What will the genotypes and phenotypes of the offspring of a cross between a homozygous brown hair person and a heterozygous brown hair person? Do the process in five steps. 1. 2. 3. 4. 5.

The classification system developed by Linnaeus in the early 1700s divided living organisms into plant and animal kingdoms. Today, that has been expanded into five kingdoms.

1. Which statement most accurately describes the process of respiration? Select one: a. It occurs only in plants during the daylight hours and usually involves the exchange of gases. b.