Solar radiation, because it hasn't (at least noticeably) affected hawks.
Answer:
by convection because convection is the transfer of heat due to indensity
Answer:
I believe the correct answer is nucleus.
I cook for my family every day, on my way back home, I phone my family to see what kind of food is in the fridge, so I can go shopping in the market. I take the car via the market home and start at the back of the market and get all of the fresh vegetables I need to cook a pasta dish, I specialize each area of the market to optimize my time, and get better prices for the produce. I ask someone to help me carry my shopping to the car, and phone home to ask my wife to turn on the oven, and start to boil water. Once home I chop the vegetable and cook the pasta, and we sit down for dinner.