Questions

Most producers use sun light for making their energy in the process of photosynthesis. The energy they prepared is sugar and glucose. 

Joseph Priestley and Carl Wilhelm Scheele both independently discovered oxygen in the year 1774, but Priestly is usually given credit for the discovery.

17 and 119

Most of the known extrasolar planets resembles the planet Jupiter in the solar system.

Secondary succession means in an ecosystem renewal of itself after all or a portion has been destroyed.

After a forest fire, the whole forest had destroyed but after that again renewal of that forest is also an example of secondary succession.

The chemical name of common salt is Sodium Chloride with a chemical formula NaCl.

Production costs to an economist reflect opportunity costs.