A baby's immune system is not fully developed until he/she is about six months-old. In the meantime, pregnant mothers pass immunoglobulin antibodies from their bloodstream, through the placenta, and to the fetus. These antibodies are an essential part of the fetus's immune system. They identify and bind to harmful substances, such as bacteria, viruses, and fungi that enter the body. This triggers other immune cells to destroy the foreign substance.
Answer: An ecosystem is a community of living organisms in conjunction with the nonliving components of their environment, interacting as a system. These biotic and abiotic components are linked together through nutrient cycles and energy flows. Energy enters the system through photosynthesis and is incorporated into plant tissue. By feeding on plants and on one another, animals play an important role in the movement of matter and energy through the system. They also influence the quantity of plant and microbial biomass present. By breaking down dead organic matter, decomposers release carbon back to the atmosphere and facilitate nutrient cycling by converting nutrients stored in dead biomass back to a form that can be readily used by plants and other microbes.
Explanation:
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Answer:
The traits that all the solar system models do share is that they have <u>a circular orbit around the sun.</u>
A mass movement is movements of masses of bodies of soil, bed rock, rock, debris, soil etc. which usually occur along steep-sided hills and mountains because of the pull of gravity
Answer:
A trust me.
Explanation:
are you functional adaption is an adaption that helps an organism survive in a certain environment, typically altered by a physical stimuli, dietary changes, or injury.
