<span>There are three major groups of mammals, categorized on the basis of their method of reproduction. Monotremes lay eggs to have children instead of having the mother bear them. The second type of mammal is the marsupial, which are non-placental animals who carry their young in their pouches. Eutherians are the third group who are placental mammals.</span>
Independent variable: The difference in the amount of water the plants are fed. Dependant variable: the health of the plants . Control variable: temperature, amount of sunshine, type of plant amount of co2,
When Living beings are breathing,they get oxygen and put out carbon dioxide!
Answer:
Radioactive dating of rocks
Explanation:
