Because carry out all the functions in the human body necessary for living. Proteins make up hormones that are required for living. Insulin - responsible for stabilising blood sugar. Haemoglobin - responsible for carrying oxygen around the body. Melatonin - responsible for helping us get to sleep. Adrenalin - responsible for the flight-fight-freeze response. There are many more but here are just a few.
1. A !! Its Mesozoic era and Jurassic period !!
2.B !! Archaeopteryx led to evolution of birds as they are connecting link between birds and reptiles.
3.B !! Very popular to be known , dinosaurs extinct due to metroites collision !!
Answer:
both photosynthesis and cellular respiration helps produce oxygen and energy.
Explanation:
photosynthesis is the process of producing food by the leaves of the plants with the help of sunlight.
cellular respiration is the process gaining energy though burning nutrients in the cell.
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<span>lowering the activation energy needed.</span>
