what evidence is there to show that changing sand to glass is a chemical change

What is the definition of genetic material

If element X has 41 protons, how many electrons does it have?

What makes peat a nonrenewable energy resource? a. it can be replenished within a person's lifetime. b. when burned, it contributes to global warming. c. it takes much longer than a lifetime to form. d. when burned, it adds pollutants to the air.

Do you think social media is an effective method of raising money for worthwhile projects? Why or why not?

18) Do all bacterial cells have this circular DNA? Explain.

Salvador would like to take a paternity test to determine if he is Pilar's father. He asks Pilar's mother, Antonia, to provide DNA samples for both her and Pilar. Which technique will most likely be used to compare the three DNA samples?

What is not a a form of passive transport

12. When a plant grows on the shade

What is the life expectancy of stage 4 sarcoidosis?

What does action force mean