Hydrogen bonds are formed as a result of which of the following? A. Ionic bonds b. Nonpolar covalent bonds c. Polar covalent bonds d. None of these are correct

Look at the punnett square for an x-linked recessive disease. is it possible for a female offspring to have the disease?

How many trophic levels are there in the following food chain? phytoplankton - shrimp - perch - pike - osprey

Out of the seven main animal groups (fish, mammals, birds, insects, reptiles, amphibians, and arachnids), how many contain members with internal backbones? a. 5 b. 3 c. 7 d. 1