Which of the following is an effect of forest fires on the atmosphere? A. a decrease in water vapor B. an increase in oxygen gas C. a decrease in nitrogen gas or D. An increase in carbon dioxide

Which of the following would be a valid hypothesis for a scientific investigation about how transportation affects food security? O A. Buying foods that travel great distances results in more waste than buying foods locally. O B.

A pregnant mouse is exposed to high levels of a chemical. Many of the mice in her litter are deformed, but when they are interbred with each other, all their offspring are normal.

A method to trace the inheritance of a trait over many generations is called a (A) carrier tree. (B) pedigree. (C) phenotype. (D) genotype.

Give examples of how to conserve fossil fuels,

Unsegemented worms that are pseudocoelomates and have two body openings to their digestive systems are (a) Porifera (b) Arthropoda (c) Cnidaria (d) Nematoda.

What is the final electron acceptor in aerobic respiration

Which texture best describes an igneous rock that formed deep underground?

What is the relationship between the size of a predator population and the size of a prey population?

Under the Clean Air Act, science is the foundation for setting health-based air quality standards for certain common air pollutants.

In living organisms, lipids are used for O A. Quick energy O B. Transport O C. Insulation