Which statement accurately compares archaebacteria and eubacteria?
A. Both take different shapes and sizes.
B. Both are always heterotrophs.
C. Both can sometimes live in extreme environments.
D. Both are known as "true" bacteria.

C.Both can sometimes live in extreme environments.

Explanation:

Both archaebacteria and eubacteria belongs to the kingdom monera. Both are prokaryotic organisms i. e. having no true nucleus, cell wall, mitochondria, ribosome and vacuole etc, and unicellular organisms i. e. made of one cell. Both reproduce through asexual such as binary fission, budding and fragmentation etc. Both archaebacteria and eubacteria has the ability to survive in extreme environments like volcanoes etc.

C. both can live in extreme enviorments.

Explanation:

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these muscles maintain the blood pressure in the vessels. the smooth muscles are innervated by nerves of the autonomic nervous system. when the muscles contract, they cause vasoconstriction of the vessels and increase blood pressure. when the muscles relax, they enable vasodilation of the   blood vessels hence reduce blood pressure.