Answer:
B) ecosystem, community, population, individual
Explanation:
An ecosystem is the most inclusive level of the ecological system for it comprises of both living and non living organisms that are joined together through the nutrient cycle and the flow of energy. An ecosystem is made up of different communities.
A community comprises of organisms of different species that live and interact with one another in the same habitat.A community is formed by different populations.
A population is made up of many individuals of the same species that can interbreed to give rise to viable offsprings and end up forming a community.
An individual is a living organism that cannot interbreed with other individuals giving rise to a viable offspring.It is the least level in the ecological organisation.
They are all part of the digestive system, they all break down food, they all have enzymes
Answer:
ethanol.acetone and butanol
Two causes of the ocean can be floods or tsunamis. Also technically hurricanes are a cause of the ocean as well as precipitation, such as thunderstorms or snow.
Bone in the upper arm. called humerus
