A bird builds its nest in a tree. The tree is unaffected. This relationship is

All are names to describe the cricket EXCEPT

According to the 10% rule, if the sun contains 2,000 J of energy, the plants in level ___ would receive ____J of energy.

_{In this graph, the population curves depicts ___ growth and the carrying capacity is around _____.}

All contribute (add) carbon dioxide (CO2) to the environment EXCEPT

An ecosystem still recovering from deforestation (cutting down trees) is an example of

As you move up the food chain, poisons increase in the process of biomagnification.

Which organism in the food chain (algae --> fish --->human) would receive the LEAST poison?

​ ​ Nitrogen fixing bacteria and _____ change nitrogen gas (N2) into amonia (NH4), a form usable for life. _____ bacteria changes amonia (NH4) back to N2.

When too much nutrients enter lakes from fertilizer, underwater plants can die from lack sunlight and fish suffocate due to lack of oxygen. What is this process called?

Which word(s) are associated with primary succession?

During the water cycle, transpiration occurs when water evaporates from ____. Condensation occurs when ___ are formed.