During a cardiac cycle, TWO of the four chambers contract at any one time. Cardiac cycle refers to the events that occur with every heart beat. The heart is divided into four chamber which are the right and the left ventricles an the left and the right atrium.
Answer:
it affects the dispersal of other important nutrients in the soil, and an imbalance can block a plant's ability to absorb them.
Rover (or sometimes planetary rover) is a space exploration vehicle designed to move across the surface of a planet or other celestial body. Some rovers have been designed to transport members of a human spaceflight crew; others have been partially or fully autonomous robots. Rovers usually arrive at the planetary surface on a lander-style spacecraft.[1] Rovers are created to land on another planet, besides Earth, to find out information and to take samples. They can collect dust, rocks, and even take pictures. They are very useful for exploring the universe.
It is the answer c hope this help
Answer:
Correct answer is (a). Local extinction
Explanation:
Local extinction is a type of relationship which result to competition between organism. A condition that makes organisms to battles for survival which may results to termination of kind of organism or group of kind of organism.
In an ecological niche, some organisms takes advantage of others, they tend to thrive and exploit others to survive while the one that can not compete go into extinction when the environment is no longer conducive due climatical change or pressure from the other organisms.
