What on a bird, besides it's feet, is chemically similar to scales?

a. beakB. feathersC. wings

If a sperm were to accedently break through a condom what would be the cause?

What contains the coded information for things like body structure, eye color, and height? mutation amino acid dna karyotype

This organelle conducts respiration for the cell. It is also called the powerhouse of the cell. What is this organelle?

If the moon was closer to the earth what effect do you think it would have on the earths tide

What is a gamete in a cell.

Triglycerides belong to which general class of organic molecules?

A rain forest has a high level of biodiversity because it has

Which best explains how the body maintains homeostais? A. All systems work together to match the external environment B. All systems work together to stabilize the body C. Each system works interdependently to stabilize the body D.

It is an effect that drug use can have on society? A. Drug use increases pollution. B. Drug use leads to an increase in criminal activity. C. Drug use increases the spread of disease. D. All of the above

Which of the following affects the speed of light waves in a material? Angle at which the ray strikes the medium Color of the material Density of the material Temperature of the light wave