Answer:
Many plant crops need more phosphorus than is dissolved in the soil to grow optimally. In addition, crops are usually harvested and removed – leaving no decaying vegetation to replace phosphorus. Therefore, farmers replenish the phosphorus ‘pool’ by adding fertilisers or effluent to replace the phosphorus taken up by plants.
Explanation:
A man is 100,000 times larger in micrometers than the amoeba, since 17 micrometers is 0.000017 meters, and 1.7 meters is 1,700,000 micrometers
Answer: 1. algae and certain protists bacteria 2. Chloroplasts
Explanation: Tell me if you need an explanation and I'll add one
Answer:
Types of Roots : Roots are of two types viz. (a) Tap roots(normal or main) and
(b) Adventitious roots.
(a) TAP ROOT-Here the radicle prolongs directly to form a main primary roots when the primary root becomes stronger and persistent, it forms the tap root e.g. roots of dicotyledonous plants.
Primary root forms tap root, its lateral branches are secondary roots; branches of secondary roots in turn produce tertiary roots and so on. The tap root with its branches forms the tap root system.