Design Ideas: In this section, include an image of each of your designs and your reasoning for placement of city
objects. List at least one pro (a positive) and con (a negative) for each of your designs. For design
2, describe what you are changed from design 1.
No

one characteristic that is shared by all is a soft body. many

of these invertebrate animals also have an outer shell to protect their

body. oysters, clams, snails, and mussels are all mollusks. so are octopuses, squids, and slugs. mollusks live on land and in freshwater.

affects the water bodies: excessive use of fertilizers causes eutrophication. the fertilizers which are used on plants affect the quality of land on which it is used, further causing erosion of soil. the fertilizers used on plants contain harmful chemical fumes which affect the environment.