What's a proportion or fraction that compares two measurements of the same quantity

What situation results from a postfertilization barrier to reproduction? what situation results from a postfertilization barrier to reproduction?

Parts of a plant that are underground are called, while those above ground are called.

Cell engulfs molecules in cell "drinking":

What are the three jobs done by the blood vessels cilia and mucus in your nasal cavity?

Green plants are the first living organism in a food chain. where do plants get the energy that they pass along to the primary consumers in their food chains?

Microorganisms that catabolize sugars into ethanol and hydrogen gas would most likely be categorized as A) homolactic fermenters. B) anaerobic respirers. C) alcohol fermenters. D) heterolactic fermenters. E) aerobic respirers.

Which of the following sentences is the best example of a hypothesis a. UV radiation does not cause skin cancer. b. chickens lay more eggs when they are happy. c. why does the earth orbit around the sun? d. how many types of organisms are there?

What will most likely result when the jet stream moves south of North Carolina

Why is the hormone oxytocin important?

4. One of the jobs of the endocrine system is to give directions to your body about when to grow and develop. Can you think of some times during a person's life when the body changes? Avita