What do you mean by positive interactions between species?

What do you mean by negative interactions between species?

What do you mean by negative interactions between species? Name the type of interactions involved in following examples. Control of mosquito larvae by Gambusia fish.

What do you mean by negative interactions between species? Name the type of interactions involved in following examples. Algae and fungus association in lichens.

What do you mean by statics

What do you mean by a joint ?

Discuss the positive interaction between species.

What do you mean by position isomers?