Answer:
Dense hair and thick skin.
Thin skin and Nocturnal behavior.
Explanation:
Dense hair and thick skin are the adaptation that is beneficial to organisms that is present in the environmental condition of Mountain Rock because on Mountain Rock, the temperature is very low so organisms needs something which make them warm, while on the other hand, thin skin and Nocturnal behavior are the adaptations that is beneficial to organisms in the Desert Sand environment because temperature is very hot.
Answer:
D. A brown gas produced
Explanation:
When a chemical reaction occur, there are several changes that takes place such as change in color, odor change, formation of a gas, and formation of a precipitate etcetera.
In the given chemical reaction, two colorless gas (NO and O2) react together and form brown gas (NO2). So, the change of gas from colorless to brown gas is the evidence that shows chemical reaction occurred.
Hence, the correct option is "D. A brown gas produced".
Our family plants a lot of tomatoes (the last option doesn’t belong)
Answer: C) the genes of this phage were made of DNA.
Explanation: the experiment described above wherein a radioactively labeled bacteriophage was allowed to infect bacteria ultimately led to the conclusion that the genes of the bacteriophage under study were made of DNA (a biopolymer of deoxyribonucleic acid, which is a type of nucleic acid composed of four different chemical groups, called bases: adenine, guanine, cytosine and thymine). Simply put, the experiment shows that the genetic material of the phage is DNA.