The effects of the intertidal zone on two species of snails, and how an adaptation can help in an organism's survival.
Periwinkle (Littorina specie) is a very common snail that is found in the upper intertidal zone due to their adaptation abilities which increase its survival in its environment. They are small in size i.e. less than 1/4 inch and feed on micro algae that grows on the exposed rocks.
Snails close them in shells and excrete a sticky mucous that firmly attaching the animal to the rock of seagrass. so we can conclude that adaptation can help in an organism's survival.
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1 What the raft is made of 2 what you're going to bring on the raft 3 how many pounds are going to be on the raft.
Answer:
3
Explanation:
so since the density of water is 1, anything less than 1 would float in water (making it cork), and anything more than 1 would sink.
the only one that's less than 1 is sample number 3, because its 24/100
In the plants, vascular system has two parts. Xylem transports water and minerals up, and phloem transports sugar down and to all the cells of the plant.