Any chemical, physical, or biological changes in the environment that harms living organisms is called

Does the baby move during gestation (pregnancy) ?

Which polysaccharide has the main function of being a structural component of bacterial cell walls?

6. What role does gravity play in the water cycle?

Dolphins are able to sleep without drowning because they have gills, like fish do. have a special opening that allows air in but not water. sleep on just one side of their brain at a time.

A bacterium closely associated with humans is known to be responsible for gastric ulcers and stomach cancers. The genus of this bacterium is: A. Heliothrix B. Helicobacter C. Herpetosiphon D. Histophilus E. Herbaspirillum

Science 6. Is this statement True or False? The gametophyte stage comes before the sporophyte stage. True or False?

What precautions need to be taken when working with a fan propelled car?

Which of the following are items that are a threat to biodiversity? pollution and succession habitat loss and predation poaching and habitat loss succession and pollution

Tectonic plates are made of earth asthenosphere

Photochemical smog tends to form over