You are presented with the question "What is used for cooking by generating fire?" and the following answer choices: - energy - electricity - engines - Light - a stove - gas - coal - Conifers Now knowing that astove is used for cooking by generating heat and fire has intense heat, choose the best answer.
a stove
(Question)
You are presented with the question "what is used to heat a building?" and the following answer choices: - water - iron - coal - fire - gas - CFCs - oxygen - oil Now knowing that energy is used for heating a building by a heating system and radiators are used to heat the building, The energy source is oil, choose the best answer.
(Answer)
oil
Ques: You are presented with the question "Bottleneck effect can be a precursor to what?" and the following answer choices: - massive damage - Climate change - Destroy bridges - Cambrian explosion - ground to shake - clams - soda - extinction Now knowing that bottleneck effect occurs when a population suddenly gets much smaller and population size is the predictor of extinction probability, choose the best answer.
Ans: extinction
(Q).
You are presented with the question "what do creeks deposit in plains?" and the following answer choices: - fibers - rain - dirt - rocks - soil - fats - Sand - potash Now knowing that when a river floods , that river deposits soil in flood plains and rivers and creeks leave flood plains, choose the best answer.
(A).
soil
Ques:You are presented with the question "What are the structural and functional units of the organ that filters blood?" and the following answer choices: - lungs - nephrons - humans - pancreas - eardrum - alveoli - epidermal - organ Now knowing that nephrons are the structural and functional units of the kidneys and blood is filtered in the kidney, choose the best answer.

Ans:nephrons
Ques: You are presented with the question "what is also used to remove harmful substances from water before drinking" and the following answer choices: - electricity - pressure - air - bacteria - a pathogens - toxins - Chlorine - Cooking Now knowing that treating water is used to remove harmful substances before drinking and chlorine is also used to treat water, choose the best answer.
Ans:
Chlorine