Explanation:
What happens during daytime is, oxygen that gets trapped between filaments of algae, moves them to the surface and during night as O2 is not produced, they slowly sink to lower depths, and you don't see them
The correct answer is bpa in bottles affects particular glands.
An endocrine disruptor is a chemical which at certain doses can disrupt the normal endocrine function of the organism. The effects of an endocrine disruptor can be quite severe, from birth deficits and cancerous tumours to developmental disorders.
One of the most commonly detected chemicals in the human body is bisphenol A (BPA), a material used in the production of plastics. It is considered an exoestrogen, meaning that it possesses hormone- and estrogen-like properties. These properties affect specific glands of the human body causing reproductive and neurological problems, obesity, diabetes and some types of cancer.
Feedback from estrogen is a mechanism that the human body uses to control the FSH release from the gonads. This is not considered an endocrine disruptor since it is a natural mechanism. In addition, iodine is a chemical element essential for the synthesis of thyroid hormones. Any lack of it is not considered an endocrine disruptor. Finally, calcitonin is a hormone produced in humans by specific cells of the thyroid gland and it is not considered an endocrine disruptor.
Answer:
Convection currents are the result of differential heating. Lighter (less dense), warm material rises while heavier (more dense) cool material sinks.
Answer:
When an organisms reproduces asexually its offspring is identical, this means it has the same DNA code.
For example viruses look for specific protein types at cell membranes to "anchor" or "stick" and then inject their genetic material. If all the individuals of a population have the same membrane proteins the whole population is vulnerable to be infected by the virus.
Sexual reproduction creates genetic variability due to mechanisms like crossing over and the assortment of chromosomes during meiosis. On top of it, different parents contain different information which leads to offspring with similar but different characteristics which can end up having different membrane proteins that can save them from the virus.
