Answer:
Dust bowl resulted from extreme drying and loosening of the soil that resulted in soil erosion by wind. Thus, it can be related that poor agricultural practices like over plowing , over grazing and leaving the land barren are human activities that must have contributed to the dust bowl.
Explanation:
- Dust bowl is referred to a period in early twentieth century when the the American and Canadian prairies faced severe dust storms.
- These dust storms resulted from severe drought and failure of practices to prevent soil erosion.
- Several people and livestock died as a result of choking.
- Over plowing, removal of top soil and small grasses exposed the soil to eroding winds and caused the dust storms.
Decomposers break down dead animals and plants. They usually benefit producers by releasing nutrients back in the soil.
Answer:
First, the zygote becomes a solid ball of cells. Then it becomes a hollow ball of cells called a blastocyst. Inside the uterus, the blastocyst implants in the wall of the uterus, where it develops into an embryo attached to a placenta and surrounded by fluid-filled membranes.
Answer: I feel that the theory of plate tectonics is correct, because we use friction every day which means friction could make vibrations larger too!
Answer:
"The axon, the long, thin part of the neurone along which the impulse passes, is covered in a fatty myelin sheath, which acts as an electrical insulator."
Explanation:
"The dendrites receive incoming nerve impulses from other neurons."
