Which author argued in the origin of species that living things have changed over time because of the struggle for limited resources? a. karl marx b. charles darwin c. jean-jacques rousseau d. charles wingspanens

Use the selection to answer the question. which best describes the climax of the story? a.) the veterinarian tells tommy that max might not recover b.) the veterinarian says max will recover c.) tommy discovers max is sick d.) max is back to his old self