During the Pliocene Epoch, which of the following organisms appeared for the first time in the geological record?

A. horses

B. mammoths

C. mastodons

D. modern humans

All characteristics to animals

Three genes control the production of tail structures in dogs. The wag1 gene promotes the production of tail structures. However, the brkn gene inhibits wag1 activity. Another gene, ntrdr, stimulates activity of the brkn gene.

Smallpox is a disease caused by a specific virus, while the common cold can be caused by over 100 different viruses.

What does diploid mean? What types of cells are diploid? What is the diploid number for humans?

What is the substance made up of molten rock, gases, and minerals that reaches the earth's surface called? A. rhyolite B. magma C. gabbro D. lava

Type of data display that uses rows and columns.

Which strategy best describes a way to address polluted air? Check all that apply. 1 replace the type of chemicals used in industrial processes 2 minimize the burning of fossil fuels used at industrial plants 3 study the effects of mold exposure on

When a muscle is unable to respond to stimuli temporarily, it is in which of the following periods? When a muscle is unable to respond to stimuli temporarily, it is in which of the following periods?

Which of the following planets has the largest orbital radius compared to the others? A. Jupiter B. mercury C. Saturn D. Venus

In which phylum do we first see the tissue level organization