Geologic time A. has not ended. B. began after the Precambrian. C. ended after the Cenozoic era. D. has recently paused.

Malaria kills two million people a year and is caused by what

Quanto mais aprendemos, maior nosso cérebro fica? (com prefencia, dê referencias bibliográficas)

Which example is an abiotic factor of an aquarium environment? 1. coral 2. water 3. sunfish 4. bacteria

Air masses are like the surface they form over. The air mass shown above formed over land in northern Canada. Therefore the air mass will be

Cell boundary that controls what enters and leaves the cell

A macromolecul that contains carbon, hydrogen, oxygen, nitrogen which is used by the body for growth and repair

Explain why a mark on a blade of grass will move away from the ground as the grass blade grows

What do enzymes react with? A. the products of chemical reactions B. the active site of the plasma membrane C. proteins in the cytoplasm D. a specific substrate

Isaac watched a movie where a tsunami washed across the coastline. He related the incident to the geology of the ocean he learned at the school. Which geological phenomenon did Isaac relate to? A. plate tectonics B. upwelling C.

How do mutations affect an organism? A. they may cause the development of a disease-causing allele B. they may cause the development of a more beneficial allele C. they, in some cases, may have no noticeable affect D. all of the above