Answer:
The direct threats of invasive species include preying on native species, outcompeting native species for food or other resources, causing or carrying disease, and preventing native species from reproducing or killing a native species' young.
Explanation:
The heat from hotter object goes to the cooler object. when they reach the same temperature the heat flow will stop.
Answer:
Option B, 
Explanation:
Given-
The average surface area of one foot pad of an elephant is

Weight of an Asian elephant is
newton
As we know, pressure is equal to total weight divided by total area of the surface on which it is concentrated.
Thus, pressure on one foot pad of elephant is 

Hence, option B is correct answer
Answer:
Industries cause enormous water pollution: By directly discharging their untreated effluents into water bodies like rivers and lakes. By letting their polluting effluents flow onto land so that they get absorbed into the soil and pollute underground water.