The oil and vinegar in your salad dressing remain separate from one another due to the properties of the oil

Acommon kind of mechanical weathering is called

Plz fast biotechnology is a growing field of applied biology. many crops such as corn have been engineered to be resistant to herbicides. therefore farmers can spray these chemicals to kill weeds growing near the crop without worries of killing the crop itself how does this type of biotechnology work? a. by changing the genetic make up of the crops. b. by causing the crops to kill the weeds. c. by changing the type of crops used. d. by changing the location of the crops.

There are fewer than 100 naturally occurring elements in the universe, but there are millions of different unified substances. explain how this can be true.