Jon and Sara are listing ways they can help the environment. Which item on their list is incorrect? 1. Carpool or ride bikes more
2. Recycle batteries and old phones
3. Only fill cars with gas when the tank is more than half empty
4. Use reusable grocery bags when shopping

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the tricuspid valve is present between right atrium and right ventricle

hi my name is ashlynn and im 15

these macromolecules could either be amino acids, proteins or nucleic acids. they are responsible for the chemical changes and reactions that affects largely the cell and its composition. take for instance the cytoplasm of the cell where these organelles are settled. these simple organelles are composed of macromolecules which ignites and catalyses different functions that enables cells, in macro-perspective in motion and metabolism. in intestines for example, metabolism happens and breaking down parts of a food to simpler compounds that are used and these nutrients delivered throughout the body and again broken down by into smaller components.

d. cellulose and starch