Answer:
cell is the smallest unit of life, also called the 'building blocks of life' because cells multiply and differentiate to form a multicellular organism as well as give rise to new organism by forming gametes or reproductive spores.
Answer: The early earth environment was having hydrogen in abundant amount. the early atmosphere was full of methane, ammonia, hydrogen sulfide and water. Today the atmosphere contains 0.03% of carbon dioxide in the environment which was higher in the early days of life. There was no life because of less amount oxygen in the environment.
Now the environment is full of oxygen and has less amount of carbon.
I believe its C, because when the human body feels hot, it sweats (or transpires) to maintain homeostasis. 40 degrees C is very very hot temperature
I had this question on one of my lessons the answer is 15.
