A. mutation is the correct answer.
Answer: In terrestrial ecosystems the presence of vegetation in floodplains and watersheds can reduce the occurrence and severity of flooding by slowing water flows, enhancing percolation and storage, and allowing gradual release of water, thereby maintaining base flows and reducing peak flows.
Explanation:
The correct answers are:
A. The southwest was covered with sand dunes. This period increased aridity in the southwest of the USA
.
D. Much of the northern United States was ice covered. During the last glacial period, the north of USA was covered by ice, in especial during the Last Glacial Maximum (LGM)
.
These answers are not correct:
B. Canada was covered with ice thousands of feet thick. During this period, Canada was almost completely covered in ice (97%); however, the ice was not so thick
.
C. Florida received heavy rains. Florida was drier during this period.
Answer:
A. The potential energy could be increasing like a ball thrown into the air
C. the ball could be returning to its natural resisting state
Explanation:
When an object is in motion, the energy of the object changes to and from each type. When the energy slows down then there is also changes in energy forms.
The potential energy of any object in motion like throwing a ball in the ball always increases because potential energy is directly proportional to the height of the object. When a ball is thrown up the kinetic energy converted into potential energy ad the ball reaches at maximum height which increase the potential energy of the object in motion. But after attaining the maximum height the, potential energy decreases and object falls back towards the earth.
Kinetic energy could not lost the friction because friction only prevent sliding not to prevent motion and potential energy lost it resistance while it convert into kinetic energy. So when the energy slows down it convert into potential energy converted into kinetic but kinetic energy could not lost the friction.
According to Newton's law of inertia, the ball could be returning to its natural resisting state as every object has tendency to resist changes in its velocity.
The Law of Conservation of Energy states that total energy of a system remain same but kinetic energy and potential energy do not remain same.
Hence, the correct option ar:
A. The potential energy could be increasing like a ball thrown into the air.
C. the ball could be returning to its natural resisting state.
Answer:
<h2>B
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Explanation:
1. Amphibian's heart is three-chambered from which two are atria and only one is ventricle.
2. And there is two circulatory pathways having different routes.
3.There is mixing of oxygenated and deoxygenated blood in case of amphibians.
4. And in case of mammals there is no mixing of blood,, both the oxygenated and deoxygenated blood is completely separate.
5. Mammal's heart contain four chambers from which two are atria and two are ventricle, and they completely separate both the oxygenated and deoxygenated blood.