They are medical, agricultural, and industrial.
The answer is A. a light wave
C and D both need water as a medium and sound needs air to vibrate in order to travel. light, on the other hand, does not need a medium
The hyenas and lions from The Lion King compete for territory
<span>Pituitary tumors are a frequent cause of over secretion of human growth hormone. Often the tumor is benign, meaning it is not cancerous.</span>
Skin cancer is mainly due to increased exposure to UV rays from the sun. And their incidence rate has become high lately in the holes in the ozone layer caused by air pollution.
Each person has a share of resposability concerning the pollution of the ground, and this also applies for the air pollution (industries, vehicles, fires, toxic products ...).
According to NASA researchers, climate hazards could have an unexpected origin, that of air pollution generated by the Asian continent (seat of the majority of the global industry in several areas). These NASA scientists have demonstrated that the gases produced by the 20 most polluted Asian cities in the world affect global climate.
