The environmental factors leading to injuries are often associated with other environmental health risks. For example, home and school construction and furnishing materials can lead to unintentional injuries, and poisoning may result from exposure to chemicals unsafely used or stored.
I believe that it's the nervous system.
Answer:
In Amoeba and Paramoecium, osmoregulation occurs through contractile vacoule. Osmoregulation is a phenomenon in which contractile vacuole plays an important role in maintaining the water balance of the cell. Paramoecium contains two contractile vacuoles which have fixed position.
Be friendly at first with whomever you like, it is easier to get that person as a girlfriend if you have common groind; a friendship so it will be less akward for the both of you then slowly show her things that you like her be able to make her laugh but dont try to hard talk about her to your friends but not on no weird stuff then slowly make your moves like hand holding huggin kisses on the cheek there fore and so on and be protective over her but not possesive you know just show her you care
