Describe the process of Eutrophication?
Eutrophication occurs when heavy rains cause fertalizers from farmland to flow into rivers or lakes. These fertalizers lead to a reduction to the limiting factors of algal growth by providing phosphate and nitrate to the water. Due to this, the algae blooms and overpopulates the water body, leading to algal death. This algal death attracts decomposing bacteria which absorbs oxygen from the water during respiration, lowing the concentration of oxygen in the water body. This causes many organisms in the water to die, and leads to unhabitable water bodies.
JG
Related Biology GCSE answers
All answers ▸How do I compare the processes of diffusion and osmosis?
In 2012, two scientists were awarded the Nobel prize for their research on stem cells. They showed that adult cells could be reprogrammed to become cells with the properties of embryonic stem cells. Describe the possible benefits of this research.
Describe four characteristics of an efficient respiratory surface
Cystic fibrosis is a genetic disorder caused by recessive alleles. Complete a Punnet square to show the inheritance of cystic fibrosis when both parents are carriers. State the probability of that a child born to these parents will have cystic fibrosis.