Answer:
D. All of these choices are correct.
Explanation:
A fossil is the remains or impression of a prehistoric organism preserved in petrified form or as a mold or cast in rock so all of the options apply.
Air mass, letter a is the correct one
Answer: The process of reducing or removing minerals from water is called desalination.
Explanation:
The most commonly involved in this process is seawater, which by its nature contains large amounts of salt. This process makes it possible to remove salt from the water and obtain drinking water. The coastal and island regions often have great difficulty in supplying drinking and process water. As a result, permanent or occasional shortages of water and all the resulting consequences are becoming increasingly frequent.
Furthermore, in the future, due to a possible lack of water, this process could be crucial in supplying humanity with drinking water. Today, some countries (such as Saudi Arabia) that have a water scarcity problem are actively using this technique to supplement the required quantities of water.
Answer:
Limestone areas are predominantly affected by chemical weathering when rainwater, which contains a weak carbonic acid, reacts with limestone. This causes the limestone to dissolve. Carbon dioxide from the respiration of animals (and ourselves) is one cause of increased carbon dioxide in the atmosphere.
Answer:
B. Practicing soccer for the excitement of the game
Explanation:
Intrinsic motivation is a behavior which stems from activities which gives natural satisfaction. This can be just a smile or a sense of pride. The motivation is drawn from a sort of self worth achievement.
For extrinsic motivation, a price is attached for a feat achieved. This could be winning an olympiad, essay contest etc that comes with good reward.
From the options provided only practicing soccer for the fun or excitement of it fits into the meaning of what intrinsic motivation portrays. Others are as a result of extrinsic motivation.
