Match each activity to its consequence.

use of extinguishers

combustion of fossil fuels

use of carbon

tetrachloride as an

industrial solvent

agricultural activities

use of aerosol sprays

containing cfcs

increase in greenhouse gases

ozone depletion

To determine if a particular plant is homozygous or heterozygous, you would have to test cross with a

To take a whiff of your favorite food, you use both? a. motor nerves and your digestive system b. sensory nerves and your immune system c. motor nerves and your skeletal system d. sensory nerves and your respiratory system

Choose the best definition of allele. a. one of several possible versions of a gene, which each produce a different phenotype b. an organism that's purebred for a given trait c. the process of fertilizing a plant with pollen from another plant d. a set of genes that are located on the same chromosome and so are tightly linked