What must occur within a gene pool before the formation of a new species? a. geographic isolation b. niche formation c. reproductive isolation d. speciation

Which protist can cpture food and convert sunlight into energy/food

In an ecological pyramid, what information might be displayed about each trophic level

2. How do viruses make copies of themselves and spread?

The scientists who tested the hypothesis on running in the rain performed only one controlled experiment that supported their hypothesis can their supported hypothesis be called a theory? Explain

Euglena use which structure for movement

Where on Earth's surface might you be if you are experiencing the westerlies? Explain how air pressure, temperature, and the Coriolis effect influence the movement and direction of these winds.

Why might it be important to use different models at different stages of an investigation.

Which of the following wave properties would be the best way to measure the height of a wave?

Would evolution by natural selection be able to happen if there was NO differential survival and reproduction within a species? Why or why not?

Air pollution is caused by A. natural events and human activities. B. human activities but not natural events. C. heavy rainfall. D. the sun.