Scientists have discovered a new species of vertebrate. It lays amniotic eggs, has a three-chambered heart, and is ectothermic. To which group of vertebrates does this new species most likely belong?

birds

mammals

reptiles

amphibians

bony fish

Which bug incubates underground for long periods of time? A. chinch bugs B. cicadas C. grubs D. mole crickets

How many cubic miles of water on Earth is stored as groundwater?

Within the leaf, there are many air spaces between cells of the

Which of the following are ways that humans increase the amount of greenhouse gases in the atmosphere? Check all that apply. burning fossil fuels deforestation livestock death of organisms landfills agriculture sewage treatment

How long does parvo stay in the environment?

The modern classification system is based on A - putting organisms into categories based on where they live. B - putting organisms into categories based on how they reproduce. C - putting organisms into categories based on similar characteristics.

Classify the mutations as somatic or inherited A. Mutations in the KRAS gene in lung cells promote continuous cell growth B. Mutations of the BRAC1 gene in egg cells lead to breast cancer C.

The female determines the sex of mammals. True False

The definition of a hero is a. universally understood. b. determined by personal and cultural factors. c. clearly defined by a set of established traits. d. static and impartial.

Hydrogen ion concentration in vinegar