D is correct. Cool air sinks, which forces warm air to rise.
Convection is when warm material rises and cool material sinks
Hope it helps
Answer:
When heat is added to a substance, the molecules and atoms vibrate faster. As atoms vibrate faster, the space between atoms increases. The motion and spacing of the particles determines the state of matter of the substance. ... When heat leaves all substances, the molecules vibrate slower.
"C. Ecosystem"
An ecosystem is described by the interaction between living organisms in a given area, interacting with others, and non-living aspects of the environment where they are in. By considering the living place of a woodchuck, what they eat, and where they feed, we are talking about an ecosystem.
Answer:
Omnivores
Explanation:
Humans have canine teeth and molars. Canine teeth are used to rip apart meat this is why you see other animals like wolfs and lions have really sharp teeth. Molars help grind down and chew plants, in our case fruits and vegetables. Since humans eat both meat and vegetables we are omnivores.
