The trunk of the tree is its stem
Answer: Nitrogen-fixing
Explanation: Nitrogen-fixing bacteria (shown here in a soybean root) are able to convert nitrogen from the air into a form that plants can use
Answer:
B. Without greenhouse gases, Earth would be too cold for life to exist.
Explanation:
Greenhouse gas (carbon dioxide) can reflect sunlight back to earth so it keeps the energy and make the planet warmer. Too many greenhouse gases make the planet too hot and cause global warming, but if its too little then the planet will be colder.
Colder temperature can also be dangerous as it will kill many organisms that can't resist it. The ideal condition should be in between, not too hot and not too cold.
Answer:
B, C, B
Explanation:
Follow it in this order, Hope it helps.
Answer:
Ants and aphids have a special relationship, mutualistic in nature
Explanation:
hey each benefit from one another; ants protect aphids and aphids feed ants. Aphids feed their farmer ants a sweet honeydew liquid in exchange for protection from predators.
