All dogs are warm-blooded. all warm-blooded creatures are mammals. hence, all dogs are mammals

What are two ways bacteria provide nutrients to humans?

What causes Down syndrome? a deletion antibiotics a substitution nondisjunction

What one organ system shows significant effects of aging?

Some consumers, like lions, do not eat plants or any other producers. They only eat other animals. How do lions obtain the carbon they need?

1. Which of the following IS NOT a characteristic that determines the structure of a marine aquatic ecosystem? A. Depth. B. Number of species. C. Flow. D. Water chemistry.

4. The Sun and stars do not move. True False

In which part of a coal-burning power plant is the coal actually burned? boiler condenser pulverizer

What type of cell does mitosis produce?

What do ribosomes do? a. making ATP energy b. making proteins

What is a negative consequence of a mandatory quarantine