The right option is; d. things discarded by humans
Marine debris is best described as things discarded by humans.
Marine debris is any human made, solid substances that has be intentionally or unintentionally released in a lake, stream, sea, ocean, or waterway. Marine debris may be composed of simple items such as a plastic bag, bottles, glass or cans that enter the water body potentially injuring and killing marine life. Almost all marine debris comes from land-based sources.
the body distributes more blood to the body surface where it can ... Changes in diameter affect peripheral resistance, pressure, and flow, which ... the aorta and carotid arteries: The aortic sinuses are found in the walls of the ... When blood pressure drops too low, the rate of baroreceptor firing decreases.
