Answer:
Cane toads were introduced intentionally in Australia in 1935 to combat cane beetles in the sugar cane crop fields. These toads exhibit higher feeding capacity. These can feed not only cane beetles but other insects which affecting agricultural yields. They are poisonous in nature, they kill any insect after ingestion. Therefore, they are useful biological insecticide which provides crops resistance against insects.
Drilling with pipe and mud
The work done is 137 joules.
Lifting opposes the acceleration of gravity, which is 9.8 m/sec/sec.
20 x 0.7 x 9.8 = 137 J (kg-m2/sec2)
B) Geothermal energy
It is heat within the earth
Answer: Endosmosis is the movement of water from outside to inside of the cell. In hypotonic solution, concentration of the solvent is high outside the cell. Therefore, water/solvent enters the cell causing the contents of the plant cell to press against the cell wall. In hypertonic solution, exosmosis will take place, i.e. the solvent/water will move from inside to outside of the cell.
Explanation:
