During which period did the first land vertebrates appear?

A. Devonian

B. Mississippian

C. Pennsylvanian

D. Permian

In Montana, wild huckleberries rely on bears and other herbivores that consume their fruit to spread their seeds. As a result, these plants wrap their seeds in sweet, nutritious fruit that is comparatively undefended.

11. The amount of a product available for purchase. Supply Elasticity Demand Shortage

Astronomers have determined the temperature of a newly discovered star. When their results, which of the following will they use? A. thousands of kelvins B. billions of astronomical units C. millions of light - years D. hundred meters per second

A cell well divide and make two cells that are exactly the same. True or False

In fruit flies, straight wings are dominant and curly wings are recessive. What will the generations look like? Assume that Mendel's method of crossing two true breeding parents with opposite traits is followed. Check all that apply.

What are three of the excretory organs of the body

10. What is a major limiting biotic factor for animal succession in each stage? A) plant species B) sunlight
C) soil minerals D) vitamins

Which kind of energy comes from sources that won't run out?

A scientist presents the findings from her latest research at a scientific conference. Several scientists in the audience question her analysis. Which of the following is the best response to the criticism? A.

A commonly used medication to treat hypothyroidism is A. glipizide. B. levothyroxine. C. metformin. D. glitazone.