False because immigrants may have defined slang but they helped transform architecture
It's called puberty. The moment in time where a children most likely go from kinda ugly to less ugly. LOL. You are all amazing. !!!!!!
This is a symbiotic relationship, where both the partners, fungi, and plants are mutually benefitted by exchange of nutrients and none of them is being harmed by other's presence. It is a mutual cooperation and helps both organisms in survival and nutrition.
Answer:
Valves
Explanation:
Circulation is maintained in the veins by the valves.
Veins are part of the blood circulation system and blood vessels that transports deoxygenated blood from parts of the body back to the heart. Within the veins are valves (flap like structures) which maintain circulation by ensuring that blood in the veins move in the proper direction toward the heart. Blood that is being transported through the vein usually have low pressure. The valves work by providing pressure to enhance the blood’s movement, and they also disallow backflow of blood as it moves through the body. Most of the veins, especially the ones located in the legs and arms usually have one-way valves.
Sexual production requires the sperm and egg cell
