Uche Emmanuel

Yhyh...I see😹😗

We learn everyday

Goldwyn Onyebuchi
The silvered wall is used to prevent heat loss by radiation

The answer is 20cm

Actually the blue green algae can photosynthesize so it's a green plant and that's annulling the option D . Then again the blue green algae(nostoc) is in the kingdom Monera and it's prokaryotic.....so there you have it...the answer is B...

The answer should be variation because variation is the uniqueness of an organism in a population

This is wrong because the correct answer is the spring balance....mass is measured by beam or chemical balance and the option C isn't complete

Well....this is wrong because whether r2 is greater than r1 or not...the combined resistance is greater than r2....use any digit as an example

Carbon cannot be added to the atmosphere when building up organic compounds because when that happens the so called carbon dioxide is removed during photosynthesis but during breaking down of sugar aerobically by animals there is release of carbon dioxide

It is when the bladderworm in muscles of pig head is infolded that is when it is eaten into man as not really cooked pork

Magnesium hydroxide is not soluble so therefore it isn't an alkali

The number of replacable hydrogen or hydroxonium ions in an acid is it's acid strength

The answer to this is maltose and starch

An alkali is a soluble base and ammonia is soluble buh not aluminum hydroxide

The answer is toluene because phenol is used as a disinfectant while the toluene is used for explosives

Reference..new school chemistry

This is also wrong
Because they said hydrogen ion concentration not hydroxide ion concentration...having found the pH you subtract from 14 to give 3.30

The answer is detect because..using half life you can be able to date back to when that particular substance existed

This is actually wrong because any substance that dissolves with liberation of heat,it means that the reaction is exothermic so therefore solubility decreases with increase in temperature and vice versa