Which of these shows a possible set of energy relationships in a food web? A snake eats frogs, which eats caterpillars, which eats dandelions.

An owl eats mice, rabbits, and snakes; snakes eat frogs and mice; frogs eat caterpillars and grasshoppers, which eat dandelions and grass and mice eat wheat and clover.

A frog eats snakes, rabbits, and owls; snakes eat frogs; frogs eat caterpillars; caterpillars eat dandelions.

A grasshopper eats mice, clovers, and wheat; mice eat clover and wheat.

answe with one of the options

what is the general relationship between a galaxy's distance from earth and its speed?

the answer is:

the farther away a galaxy is from us, the faster it is moving away from us.

can you attach the

1 is the answer to this problem

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.