The term prehistory includes all of human existence prior to the emergence of writing.
Answer:
With respect to the cases of early-onset Alzheimer’s disease are inherited, a type known as familiar Alzheimer’s disease (FAD), the statement is best supported by this information is that FAD is the result of a genetic change in one or more chromosomes.
Explanation:
Options for this question:
- <em>FAD is the result of a genetic change in one or more chromosomes.</em>
- <em>Natural selection will continue to reduce the incidence of FAD.</em>
- <em>FAD affects only the genes of middle-aged people.</em>
- <em>Deletion of one amino acid causes FAD.</em>
Alzhaimer's disease is a type of dementia that is characterized by neuronal degeneration, causing disorientation, memory and manual skills loss , among others. The familiar variety (FAD) is hereditary and is associated as a cause of disease and early Alzhaimer, before 60-65 years.
So far, three types of mutated genes related to FAD have been established:
- PSEN₁ or presenilin-1 gene
, more frecuent.
- APP or amyloid precursor protein gene.
- PSEN₂ or gene for presenilin-2, very rare or uncommon.
In some cases, people affected by FAD have alteration in more than one gene at the same time.
For this reason, it can be stated that FAD is the result of a genetic change in one or more genes or chromosomes.
Learn more:
Alzhaimer's disease brainly.com/question/7999310
Explanation:
Tropical rain forests are one of the densely vegetated forests with millions of plants and animals species. The climate of the Earth is changing at an alarming rate and the scientists are appealing people to save these forests.
This could be accounted for the reason that the tropical forests have a diversity of plant species which can utilize the available carbon dioxide from the atmosphere to perform photosynthesis. This can directly reduce the carbon dioxide concentration in the atmosphere which is responsible for the greenhouse effect.
The greenhouse effect increases the temperature of the Earth as the greenhouse gases like carbon dioxide and monoxide covers the atmosphere which does not allow the sun rays to deflect back from the surface of the earth and the heat energy is trapped in the atmosphere. This heat energy is one of the causes of Global warming.
