To give the planet mars the ability to support life like life on earth, we would have to find a way to change the planet’s

To give the planet Mars the ability to support life like life on Earth, we would have to find a way to change the planet’s

Atmosphere  and raise its temperature

Explanation:

Thing common in living- organisms: grow , take energy, get rid of waste,evolve in response to environment

First we need to know why Earth  is suitable for life :

1. Its atmosphere : which helps in maintaining suitable environment for living.The atmosphere on Earth maintain its temperature.

It contains Gases like : Carbon dioxide , Nitrogen ,Oxygen.

These gases are required by the different living things for survival .

2. Sources of energy : Every living organism need source of energy for their growth. Even a microscopic organism require food to carry out its life- process.

Water , Sunlight , gases are some important food sources for living things.

Why Life do not exist in Mars?

In 1986 scientist mistakenly thought that there is life on mars also. But no solid proof was found anywhere.

So to support life on Mars , Raise its temperature and Atmosphere needs to be changed

catya your not at all which answer i've seen you do this on another question!

hydrocarbons are organic compounds that contain only hydrogens and carbons. they can be saturated (those which contain only carbon-carbon single bonds) or unsaturated (those which contain carbon-carbon double or triple bonds) in nature. hydrocarbons can undergo several reactions like substitution, elimination etc.  

on substituting one or more hydrogen atoms in hydrocarbon it results in the formation of haloalkane. as the halogen atoms are large compared to the carbon and hydrogen atoms, due to which the molecular weight increases and the bond become polar because of presence electronegative halogen atom and results in the increase in boiling point of the haloalkane.

thus, the correct option is (b) that is the boiling point of the new compound increases on substituting a hydrogen atom with a halogen in a hydrocarbon.