“Chemical X” was used widely in the United States as an insecticide for many years. Eventually, research showed “chemical X” was a persistent chemical that bioaccumulated and biomagnified in the environment. The chemical was later banned from use in the United States.   Chemical X was found to biomagnify in the environment. Below is part of a food chain. In which organism would the highest concentration of chemical X be found?   zooplankton → sardines → herring → tuna → dolphin

We can thank plants, and particularly chloroplasts for the oxygen and sugar we enjoy. The process of using sunlight to build these molecules is called

In the water cycle, what is NOT a term for water becoming water vapor?  

What is NOT true regarding corals?

What would be a limiting factor in a given biome? 

__________ usually have warm-hot summers and cool-cold winters with a medium amount of rain. The vegetation is usually sculpted by lager herbivores and/or fire  

Due to things like habitat destruction and other human activities, the rate of ________ is MUCH higher than normal, causing a massive recent loss in biodiversity. 

Chlorine has an atomic number of 17 and an atomic mass of 35. How many protons would it have?  

The 4 major classes of organic biological molecules are 

A weak interaction between two polar molecules is called a