Which structure is unique to plant cells? A. cell membrane B. centriole C. cell wall D. vacuole

Cheetahs are the largest of the small cats. The cheetah population once covered all of Africa and Asia. Now cheetahs are an endangered species. Loss of habitat, commercial farming, and development are major causes of its decline.

Shelley is in her second trimester of pregnancy with her first child. she typically consumes about 1800 calories each day. approximately how many healthy calories should shelley consume each day to promote growth and development of the fetus?

When algae is exposed to sunlight, blue and red wavelengths of light are absorbed by the algae to produce sugars. Energy from green wavelengths is not absorbed. How does this phenomenon validate the Law of Conservation of Energy?

Which of the following is the functional unit of a myofibril? a. sarcomere b. myofilament c. sarcolemma d. endomysium

What are the possible genotypes if the offspring

How many breedof dogs are there

What is the cause of Angelman Syndrome? a) A mutation that occurs randomly after birth or due to a viral infection in the mother during pregnancy. b) The shutting off of the paternal chromosome and the deletion on Chromosome 15 from the mother.

Which of these is a relationship shown in Carla's food web? about surface water is most useful for explaining this observa

Match each term to its scientific definition. 1.) natural world- 2.) theory- 3.) scientific method- A. everything that can be observed or explained scientifically. B. the procedure of scientific inquiry used to investigate natural phenomena. C.

The largest component of air is