Which biome, typical of Africa, is home to many grazing animals?

A) desert

B) savanna

C) taiga

D) tundra

What are the four major macromolecules

State five differences between needs and wants

How is the structure of a paramecium different from the structure of a human? a. the paramecium has organs b. the paramecium has only one cell c. the paramecium's cells lack nuclei d. the paramecium has specialized cells

According to the law of superposition, younger layers of rock are generally found above older layers of rock. However, there are locations where older layers are found above younger layers. Which of the following can cause this to happen? A.

After Frida stops exercising, she continues to breathe heavily. What is most likely occurring in her body? 1. Heavy breathing during exercise has produced an oxygen surplus in her muscles. This oxygen is being transported to her lungs.

you are running an experiment trying to figure out how water affects plant growth for three orchid plants you recently bought. The orchids are the same species and you will place the plants next to eachother in the same windowsill.

The living world is organized in levels. Biotic and abiotic factors also can be arranged into levels of biological organization. Put the words below in order from the least complex to the most complex

Which of the following, when taken up by the cell, binds to the repressor so that the repressor nolonger binds to the operator? A) ubiquitin B) inducer C) promoter D) repressor E) corepressor

Which of these organisms would be a producer? A. fish B. grasshopper C. flower D. snake

A 75 year old man need a replacement heart valve. he lives alone and cares for himself. is a mechanical or biological heart more suited for him