Explanation:
Lichen is the best species to determine the pollution of air. They are highly sensitive to pollution and will barely be found growing on trees or rock in regions where the air has been polluted.
Worms are also a good indicators of pollution in the soil. Polluted soils will have very few to no worms.
Small invertebrates like the Caddisfly are used to determine pollution of water. They are very sensitive to water pollution and cannot be found in polluted waters. In addition toads and frogs are rare in polluted waters and air.
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Usually the plant cell has a vacuole in fact animals or humans do have a vacuole but very small although the plant type cell has the largest.
They lack many properties of living things, such as not being able to reproduce without a host
Explanation:
Lateral is from the side; medial is towards the midline (often from a sagittal section); dorsal is looking from above; and ventral is looking from below. Brain Stem: pons, medulla, spinal cord.
