Thomas malthus' most well known work an essay on the principle of population was published in 1798, although he was the author of many pamphlets and other longer writings. the main ideas of his argument on the human condition were radically opposed to current thinking at the time. he argued that increases in population would eventually diminish the ability of the world to feed itself and based this conclusion on the thesis that populations expand in such a way as to overtake the development of sufficient land for crops.

the main idea of malthus' article as described above is analogous to

The main idea of Malthus' article as described above is analogous to the concept of population and carrying capacity.

Explanation:

Carrying capacity can be described as the number of species of a population that a particular habitat can hold. A certain habitat will have resources like food, water, space etc to accommodate a certain number of organisms. If the population size increases than the carrying capacity, then the individuals of a population will have to fight for the resources. The resources will become depleted over time and the ecosystem will no longer be stable.

the transfer for conduction is the heat transfering from the liquid to the spoon

the transfer for convection is the heat rising from the liquid to the air

the transfer for radiation is the heat going through the sides of the cup and to the air

at least that is what i would do