Malaria is a parasitic disease. true false

True. The Malaria is a life-threatening infectious disease that is caused by parasites. It is transferred to human beings by getting bites from the female infected mosquito called Anopheles. The bites of the Anopheles mosquito carry the parasites from its saliva into the blood of the humans. By that, the parasite transported to the liver in where they duplicated and became mature. However, it is curable and avoidable. 

Answertropical depression;

When a lake, river or other aquatic  system  becomes  eutrophic, it can have serious negative effects on other organisms like fish, birds and even people.if an algal bloom is so bad that it causes wide-spread death  in  the  water, the organisms that die will all sink to the bottom and start to decompose.