Unlike identical twins, fraternal twins

A. are always the same sex

B. are produced from two identical embryos

C. result from two eggs fertilized by two different sperms.

D. is wrong

Cells in the nervous system communicate to each other across gaps called

Which is a possible intended result of hybridization in plants?

Which planet is most likely to have acid rain? A. Venus B. Mercury C. Mars D. Uranus

What kind of organisms live on estuaries?

In Unit 2 you learned that ocean temps and levels are rising due to the Greenhouse Effect. Do you see the trend for northern migration to continue if ocean temps continue to rise? What could happen to sea turtle nests if ocean levels rise?

Harmless bacteria are what type of bacteria? Milady chapter 5

Which kind of action is a cause of air pollution? A. Poisons are released into a major river. B. Gasoline is burned by a car engine. C. Trash is dropped in a national wildlife preserve. D. Tuna are fished to extinction.

Which questions can be answered using the scientific process

What Contains tube-like structures that carry water and nutrients

How does the polarity of water allow for life on Earth?