Electrons become excited in the reaction centre of the Photosystem during the first stage of photosynthesis.
When two sea caves on opposite sides of a headland are eroded and unite a sea arch forms.
Sea arch is a natural opening and a type of erosional landform that forms due to different rates of erosion, usually as a result of different resistance of bedrock. Sea arch is made up of a soft rock that eroded as waves hit land which creates caves in the rock. Two caves may become jointed over some time to form a tunnel and eventually, a sea arch.
Food proteins are used most efficiently when we : ( B ) consume enough carbohydrates and fats to meet our kilocalorie needs
<h3>Our Kilocalorie needs </h3>
Our kilocalorie needs vary between male and females. An average male needs about 2700 kcal per day while a woman needs about 2200 kcal per day to function properly. In order to meet this kilocalorie needs we have to consume the essential nutrients such as carbohydrates and fats and proteins.
Hence we can conclude that Food proteins are used most efficiently when we consume enough carbohydrates and fats to meet our kilocalorie needs
Learn more about our Kilocalorie needs : brainly.com/question/15983910
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I suppose it is the density, having more pockets of air in between the granules of sawdust. Air has oxygen. What does a fire need to strive? Oxygen.
