A rock contains a glassy, vesicular texture and is composed mainly of potassium feldspar and quartz. State the name of rock B. * two elements that make up the chemical composition of the mineral in quartzite *

What best describes the structure of the declaration of independence?

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.

Which of the following was not a major animal on land during the carboniferous period? amphibians insects both a and b none of the above