Which are characteristics of leeches? Check all that apply.

They are parasitic.

They are a type of roundworm.

They have setae.

They have medical uses.

They are segmented.

What is the genus and species of the animal that has retractable claws and is domesticated? A. Panthera, P. leo B. Felis, F. catus C. Neophoca, N. cinerea D. Canis, C. lupus

When several of the same species live and interact with other species in an ecosystem it is called a?

Heat transfer within a fluid takes place by

Which of the following does inhaling agents such as coal dust cause? a. tuberculosis b. pneumonia c. bronchitis d. pulmonary fibrosis e. pulmonary tuberculosis

When aerosols containing pathogens spread disease from a distance of less than one meter, it is considered?

The cell theory states that A) all living things are made of cells. B) all cells have only one nucleus. Eliminate C) plants do not have cells. D) only animals have cells

2) The population of mice in a local forest ecosystem has recently died out due to disease. In the past, these mice were the main predators of the forest beetles.

Which DNA bases pair with each other? How many hydrogen bonds are shared by each pair?

Which layers of sedimentary rock at Grand Staircase Escalante National Monument do you think are the oldest?

Animals in the higher trophic levels generally share two characteristics. They are typically