5th Grade Science OST review

What do the arrows represent in a food web?

Bees collect nectar and pollen from the flowers to feed themselves and they transfer pollen from one flower to another help the plants reproduce. What type of symbiotic relationship is this?

Barnacles attach themselves to the skin of whales, gaining a place to live and access to food. The whale is unaffected by the barnacles presence. What type of symbiotic relationship is this?

What three things are needed for the process of photosynthesis?