This statement is true. Developing countries indeed tend to have more people in urban areas than rural areas. For example, New York City has the massive population in the state of New York, compared to its rural areas upstate.
I believe the answer id Cnidaria
<span>Which of the following is true of all greenhouse gases?
</span>
C. THEY TRAP ENERGY IN THE ATMOSPHERE.
They are not naturally occurring. They are the result of human activity like using electricity, burning fuel, etc.
They don't exist in fixed quantities and they don't reflect incoming radiation. The volume of greenhouse gases emitted depends on the activity done. It also does not stay in one place, it moves around and combines with other green house gases; trapping heat in the atmosphere and making the Earth warmer.
The cell membrane is surrounded partially or totally by the Endoplasmic Reticulum which are membranes that extend along the nuclear membrane.
The answer for question 1 is (C)