Answer:
Trilobites
Explanation:
The Phanerozoic Eon is characterized by the presence of organisms that possessed hard shells as an adaptation to the environmental conditions. Among these organisms, the most common hard-shelled animals were the trilobites.
Trilobites were present during most of the Paleozoic Era, which belongs to the Phanerozoic Eon. These animals were marine organisms with remarkable and unique phenotypes.
The body of a trilobite was composed of three segments: the cephalon, the thorax, and the pygidium (tail). In addition, they possessed an exoskeleton composed of chitin, which was the reason behind their hard shells. They shed their exoskeletons to be able to grow.
Trilobites are currently extinct.
Answer:
i would pick A or C
Explanation:
because they are talking about there country
A malignant epithelial cell tumor that begins as a slightly elevated nodule with a depression or ulceration in the center that becomes more obvious as the tumor grows is known as a basal cell carcinoma.
Skin cancer of the basal cell carcinoma variety exists. Basal cells, a type of skin cell that creates new skin cells as old ones degenerate, are where basal cell cancer starts. Although it can take numerous forms, basal cell carcinoma frequently manifests as a small, slightly translucent lump on the skin. The skin on your head and neck, which is exposed to the sun, is where basal cell carcinoma most frequently develops. Long-term sun exposure is regarded to be the primary cause of the majority of basal cell carcinomas. Utilizing sunscreen and avoiding the sun's rays may help prevent basal cell cancer.
Learn more about basal cell carcinoma here:
brainly.com/question/26504884
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The most pressing issues are economics,health and housing.<span>
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