What is ostia?? pliz help I'll give brainliest​

an opening into a vessel or cavity of the body.

An ostium (plural ostia) in anatomy is a small opening or orifice.ostia (os'tē-ŭm, -ă) [TA] Small opening, especially one of entrance into a hollow organ or canal.

Explanation:

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1. (1.2kw)x(15/60hours) = .3kwh --> a

2. (5kw)x(90/60hours)x(8cents/kwh) = $0.60 --> d

3. microwave --> 1200 watts = (1.2kw)x(6/60hours) = .12kwh

coffee-maker --> 900 watts = (.9kw)x(10/60hours) = .15kwh

therefore, it requires more energy for the coffee-maker to do the same amount of work.

so the answer is a.

the generally accepted parts of modern cell theory include: all known living things are made up of one or more cells. all living cells arise from pre-existing cells by division. the cell is the fundamental unit of structure and function in all living organisms.