Answer:
C. Darwin's explanation of natural selection
Explanation:
<em>According to Darwin, natural selection selects for traits that are more adaptable to an environment and individuals with such traits tend to reproduce and contribute more offspring to successive generations.</em>
As the environment keeps changing, organisms keep trying to adapt to the changes. Those who are able to adapt flourish more within the environment while the weak ones gradually get replaced in the population.
In the case of sickle cell heterozygosity and malaria; individuals that are heterozygous for the sickle cell trait are generally known to be less prone to malaria. Hence, this becomes a selection advantage over individuals with other genotype forms. Heterozygous individuals thus contribute more offspring into the population than other genotype forms according to natural selection law.
The correct answer is C.
Answer:
1. obtain food from non-living organic material (saprophyte)
2. mutually positive arrangement between species (symbiosis)
3. response to a chemical
(chemotaxis)
4. response to light (phototaxis)
5. member of phylum Foraminifera (radiolarian)
6. organism's response to a stimulus (taxis)
7. cell with membrane-bound structures (eukaryote)
8. organism in which a parasite is growing (host)
9. sexual reproduction in some protozoans (conjugation)
Explanation:
The items duely matched to its meaning above.
All the matches corresponds with each other, with small explaination of what each does.
Answer:
earth works as a system because it has many layers that work together and it has been powered by who different energy forms. It also has an external source (the sun)
Explanation:
Answer: Option A - Farm production of fish or seafood by raising animals in tanks, ponds, or ocean net pens.
Explanation:
Aquaculture is the cultivation of aquatic produce such as aquatic plants, fish, and other aquatic animals.
Answer:
a. Damage is caused by free radicals that slow down the cell-duplication process.
c. Aging may be caused by the inevitable loss of the ability of cells to duplicate perfectly.
Explanation:
The free radical theory of aging states that aging is caused by accumulation of damage inflicted by reactive oxygen species (free radicals). It proposes that organisms age because they accumulate oxidative damage, Now,this damage comes from reactive oxygen species (ROS), which are partially reduced metabolites of molecular oxygen (free radicals) generated as products of metabolic reactions. Thus, these free radicals cause damage that slow down the cell-duplication process.
Also, Aging may be caused by the inevitable loss of the ability of cells to duplicate perfectly. (SENESCENCE).
When senescence occurs (i.e inevitable loss of the ability of cells to duplicate perfectly) there is progressive deterioration of physiological function, an intrinsic age-related process of loss of viability and increase in vulnerability of cells.
