Answer:
A reference point is a place or object used for comparison to determine if something is in motion. An object is in motion if it changes position relative to a reference point. Objects that are fixed relative to Earth – such as a building, a tree, or a sign - make good reference points.
Explanation:
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None of the bove. Soil erosion occurs due to deforestation, water, wind and tillage of the land farms. It is the removal of the top layer of the soil, and leads to poorer quality of soil, called a soil disruption. This can be avoided by using proper farming techniques and afforestation.
Of the total amount of glucose energy consumed by the body each day, about 20% is used by the brain and nerve cells.
The brain constitutes about 2% of the total body but it is one of the main consumers of energy derived from glucose.
The energy provided by glucose is used for the proper functioning of the brain. It generates ATP which is an energy source that is responsible for r neuronal and non-neuronal cellular maintenance and generates neurotransmitters.
Thus glucose-derived energy is critical for the health of the brain. Lack of energy can cause several brain diseases.
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Answer:
Explanation:The investigation is aimed at understanding
1. how molecular size affects movement through a membrane.
Therefore
2.Add more of the proteins to the plasma membrane.
Then measure the rate of the particle movement
Answer: C. Microevolution is small scale change to the gene pool of a population while macroevolution is larger scale changes that lead to speciation.
Explanation:
Microevolution can be defined as a small change in the gene frequency within a gene pool of the species, these changes will be inherited by the organisms and there will not be any drastic change at the species level. But in case of macroevolution the large scale change occurs at the genetic level, which retain for long. This leads to development of new organisms or results in speciation.
