Question

blanks
1.AN----------is a cell that can be seen without a microscope.
2.blue algae fix --------------directly from air to enhance fertility of soil.
3.metals react with acids to produce -------------gas
4.-----------discovered penicilium
5.---------is the cell organelle which produces energy by the oxidation of food .
6.--------is the unit to measure the loudness of sound .
7.1 kilogram force is equal to ------------------- newtons.

Answer 1

1.egg
2.nitrogen
3.hydrogen
4.alexander may be
5.mitochondria
6.amplitude
7.almost 10