Correct Answer : monophyletic
A clade is a group of ancestral species and all its descendants. Hence it is a branch of one same species and so monophyletic.
Correct Answer : Aerosol
Fog, clouds, mist are examples of aerosol. An aerosol is a colloid of fine solid particles or liquid droplets, in air or another gas.
Correct Answer : sun light
Photosynthesis is the process that takes place in leaves that converts light energy into chemical energy or sugars. It occurs in the presence of chlorophyll that is present in leaves as a green pigment, carbondi oxide and water with the help of sun light. So the energy for photosynthesis come from sun light.
Correct Answer : Surface Tension of water
Due to Surface Tension of water, the surface acts as a film over which small insects can move without sinking.
Correct Answer : Nicotine
The leaves of Nicotiana tabacum (tobacco) contain the toxic alkaloid, nicotine as a major constituent and several other pyridine alkaloids as minor constituents.
Correct Answer : Potassium dichromate crystals
The Breathalyzer is the oldest breath alcohol analyzer; it is based on the principle of color change of potassium dichromate solution in the presence of alcohol and then analysis using spectroscopy after a specified time to ensure complete reaction.
Correct Answer : Nitrogen
Potato chip bags are not full of air, but of nitrogen gas. This is done to prevent the chips from oxidizing, which is part of what makes them go stale.
Correct Answer : Oxygen
The most abundant elements by mass in the body of a healthy human adult are Oxygen (61.4 %), Carbon (22.9 %), Hydrogen (10.0 %) and Nitrogen (2.6 %).
Correct Answer : Burning coal in air
Correct Answer : Soil pollution
