Tisane's aunt has been diagnosed with an excretory system disorder. Tisane is uncertain of the different parts of the excretory system, and she decides to research the system. About what parts of the excretory system does Tisane learn?

"d.) carbon dioxide and hydrogen sulfide"

im not in connections yet but i might can you some questions. what grade are you in?

in a chemical reaction, the atoms and molecules produced by the reaction are called products. no new atoms are created, and no atoms are destroyed. in a chemical reaction, reactants contact each other, bonds between atoms in the reactants are broken, and atoms rearrange and form new bonds to make the products.

i believe it's c. the trait for large beaks will be passed on to future generations through natural selection.

since eventually smaller beaks would have to find another source of food or even eventually just die out from the lack of food.