<span>Sinusitis, bronchitis, and asthma are all associated with smoking tobacco and pollution.</span>
The correct answer is D.
A keystone specie refers to a plant or animal which play very important roles in the way a particular ecosystem functions. Without the keystone specie the ecosystem will be totally different or even cease to exist, thus keystone species have strong influence on the ecosystems in which they exist. Most of the time a keystone specie is a dominant predator whose removal allow a prey population to increase dramatically in size and thus reduce the overall diversity in that particular ecosystem.
This membrane is called a selectively permeable membrane as it only allows for the entry of specific substances and does not allow of others.
Does not affect organisms within an ecosystem
Answer:
DNA, or deoxyribonucleic acid, is a replicating material that is part of our bodies that is the birthplace of our chromosomes, and carries our gentic information.
Explanation: