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.
Stent placement
Stent placement is the procedure that involves the insertion of a device to hold open a vessel, usually performed after vascular surgery.
A stent is a tiny, metal or plastic mesh tube that enlarges within a coronary artery. Stent placement is usually required when the blood vessels are blocked with plaques. A stent is commonly placed during or directly after vascular surgery to keep the artery from closing up again and to maintain proper fluid or blood flow. Stents can also be embedded with medications (drug-eluting stent) to prevent the blockage of an artery.
The slow cycle returns carbon to the atmosphere through volcanoes. ... If carbon dioxide rises in the atmosphere because of an increase in volcanic activity, for example, temperatures rise, leading to more rain, which dissolves more rock, creating more ions that will eventually deposit more carbon on the ocean floor.
Answer:
The variety that prefers dry soil will show an increase in population
Explanation:
The wet soil plants will have no wet soil to thrive off of and will die. They will not compete for space because they don't want the same space and they cannot adapt quickly enough to survive and be unaffected.
