How many variables should you change in a controlled experiment?

one

two

four

as many as possible

How many types of bones are found in the human skeleton

Paige and Logan counted a total of 480 plants in 12 square meters what is the population density of these plants

Which of the following is true? A. Some substances must be dissolved in water before they can be used. B. Water is more important to some organisms. C. All organisms obtain water through food. D. Plant cells are unaffected when water is scarce.

Can a theory change over time? If so, how?

if another praire dogs migrates into an area, whats most likely to happen the praire dogs populution

In which structure of the female reproductive system are eggs priduced

In a forest, rabbits are the prey to owls. An increase in the number of rabbits in the forest would result in Group of answer choices A. an increase in the number of owls. B. an increase in the number of producers.

How are viruses different from bacteria Bacteria are heterotrophic while viruses are autotrophic. Bacteria are living organisms; viruses are not. Bacteria have a membrane bound nucleus while viruses do not.

What part of the dna molecule makes you a unique individual?

An icicle is in the shape of an inverted cone with a diameter of 14 mm and a height of 60 mm. How much frozen water is in the icicle? Use 3.14 for Pi. Round the answer to the nearest tenth. 188.4 millimeters cubed 980.0 millimeters cubed 3,077.