16. This diagram shows part of an aquatic food web from a stream near several farm fields. Overuse of chemicals in fields near the stream has
polluted the ecosystem and killed off a large portion of the crustacean
population. Select any one of the other organisms in the food web and
provide evidence to explain what would happen to their population in this
scenario and WHY it would happen. Organism: State the organism you
chose. Explain WHAT would happen and WHY it would happen.

Elements and compounds are pure substances that cannot be broken down physically into a simpler substance. a physical change doesn’t break the bonds between atoms of a substance or form new ones. compounds can be broken down by a chemical change. a chemical change breaks chemical bonds and/or forms new ones between atoms of a substance. what simple substance would a compound break into? the basic elements that make it up! for example, if you passed a very strong electric current through water you’d break the chemical bonds in water and be left with oxygen and hydrogen. which of the following is an example of a chemical change? a separating water into different glasses b breaking frozen ice cubes with a hammer c running an electric current through water d boiling water to evaporate it on a stove

Explain how the parts of the peripheral nervous system work with the central nervous system to produce a response to the stimulus

Which area is most likely to be the safest during a major earthquake?