How are honeybees affected by different factors ?

How are prosthetic groups different from co-factors?

How different levels will be affected if frogs are removed from the following food chain? Grass Grass hopper frog snake peacock

How will the hearing be affected if the eustachian tubes get blocked?

How is velocity of sound affected by an increase of presssure?

What are weeds ? How does it affect the yield of crop ?