The nutrient-rich topsoil needed for farming requires many years to develop.

a. True

b. False

Which of the following would decrease the rate of an enzyme-catalyzed reaction

A light bulb changes electrical engery into two other forms of engery. what are they?

What component of membrane contains a hydrophobic region and acts as the primary barrier to most foreign substances?

Large groups of the same type of cells working together are called

Research will be done over the Circulatory System also known as the Cardiovascular System. Research disease associated with this system Choose 3 diseases and explain the symptoms of each disease Explain the treatment for each disease

True or false: the northern lights are caused by earth magnetic field

Which of the following is a function of the nucleus? A) stores DNA B) stores sugars C) builds proteins D) packages proteins

Animals are motile because they have: a. energy b. metabolism c. nerve and muscle fibers d. legs or wings

Radiation generated by the big bang cooled and is now detectable as microwaves. t/f

What's an easy way to remember the definition of biome?