Here is a short list of 20 nature topics to write essays 4 cash , which can be a large and interesting presentation:
How gravity works.
How does evaporation and condensation work?
How bees build hives
How ants build colonies
How spiders spin spiders
As a cuckoo nests its eggs...
Like a beaver builds a dam
How to use a fire fly
How to protect natural resources
How to make coffee
According to the weather forecast.
How flora and fauna are protected
How fruit and vegetables are inoculated
Like insects, birds, reptiles, etc., they live on their internal food resources.
How ants fight
How the Grand Canyon was created...
How monarchic butterflies migrate
How erosion creates certain geological-geographical formations (in a certain area).
How glaciers have changed the landscape
How a dog can follow blood.
As you can see, it is only a fraction of all possible subjects. Just be creative and find your special topic.