7. Which of the following is NOT a characteristic that helps define syhthetic materials? A) made from natural resources
B) underwent a chemical reaction
C) made to fit a specific function
D) made using metal

Several kinds of bears are found on earth. most bears are brown or black, but one type of bear, the polar bear, is white. what process led to this difference in fur color? explain your answer.

Ill give brainiestif one neutron initiates a fission event that produces two neutrons in the products, how many new reactions can now be initiated? if each of the neutrons produced in the first fission event then initiates a fission event that produces one neutron in the products, how many new reactions can now be initiated by each neutron? how many neutrons in total were produced by the two fission events described?

How much heat is added if 0.814g of water increase in temperature by 0.351 degree c?