The sentence that uses the past participle form of the verb write is the second sentence: Ali wrote his book report last night.
When you write about yourself
Answer: What are the threats to ecosystem?
Threats to Ecosystems
Habitat Destruction. Economic activities such as logging, mining, farming and construction often involve clearing out places with natural vegetative cover. ...
Pollution. Water, land and air pollution all together play a crucial role in the health of ecosystems. ...
Eutrophication. ...
Invasive species. ...
Overharvesting. ...
UV Radiation.
HOPE THIS HELPS
Answer: It takes several redox reactions in a cell to make water from hydrogen and oxygen because hydrogen and oxygen combine explosively when a single reaction