The plant growing up a brick wall would be both exhibiting and gravitropism, hope this helps
As animals move up in the food chain they start to have larger competition for food with other animals, deer compete with elk and even rodents that eat the same food as them. They must fight for food and survival.
When they interact with each other the organism is gonna die
Plants , Animals , & Fungi . Hope this helps you !
Option 3; the other grams were realeased as a gas