Located throughout the body, veins return deoxygenated blood to the heart. Veins have valves to prevent backflow of blood and larger lumens (internal spaces) than arteries. The vein lumen has a smooth endothelium, or inner lining. The endothelium is part of the tunica intima, the innermost layer of the vein wall
From smallest to largest. That will be
Cell; cheek cell
Tissue; hydra
Organ; heart
System; digestive system
Organism; lion
Tissue is a group of cells, an organ is a group of tissues, a system is a group of organs, an organism is a group of systems
Hope that helped. Have a nice day
Answer:
schistosomiasis
Explanation:
Helminths are the parasites with a worm-like body structure and include the flatworms, tapeworms, and nematodes.
Trematode flatworms are the flatworms that cause the disease schistosomiasis. The schistosomiasis parasite is spread when freshwater snail releases its larva in the water bodies which in turn enter the healthy person bathing in the water.
Answer:
characteristics
234
Explanation:
the people needs asun because the sun is shining and all tee time people needs the sun
wolf and bears are at da top
then they prey other animals like fox, mice, otter, and fish
have a goed day
