Maintenance of the circadian rhythm is important because it helps keep the body's functions running normally.
Alteration of the circadian rhythm to a significant degree may lead to mood disorders including mild depression and seasonal affective disorder.
Abrupt shifts in routine such as shift change or travel resulting in jet lag can alter the sleep cycle and also environmental factors such as decrease in number of daylight hours. This can negatively impact the secretion of melatonin which induces us to sleep which will lead to less sleep and thus irritability and mood swings.
Answer:
D. All animals share a common ancestor.
Explanation:
- Alternative A is FALSE because most animal phyla belong to the bilateria clade;
- Alternative B is FALSE because cnidaria are diploblastic (two embryonic tissue layers) and belong to eumetazoa.
- Alternative C is FALSE because animal phyla originated from the Ediacaran biota in the Precambrian period.
- Alternative D is TRUE. All animals evolved from a common ancestor.
- Alternative E is FALSE because Sponges are triploblastic animals.
Answer:
The number of organisms an ecosystem can support depends on the resources available and abiotic factors, such as quantity of light and water, range of temperatures, and soil composition. Given adequate biotic and abiotic resources and no disease or predators, populations (including humans) increase at rapid rates.
Answer:
The way that scientists classify kingdoms is by their scientific name when they first discovered them so there won’t be no confusion in our world. They can also classify them by what they eat or what environment they live in.
Explanation:
