The five earth's spheres are biosphere, hydrosphere, atmosphere, geosphere and lithosphere.
An organism like polar bear might react with each of the sphere in the following way: The bear has its habitat on the land (lithosphere), he eat grasses and other small animals found in the biosphere. It drinks water, which is part of the hydrosphere. It breaths in oxygen and breath out carbon dioxide into the atmosphere. Its wastes is a source of food to decomposers, ( in the geosphere) which breaks it down for plants' use
Answer: B.
Explanation:
cant be 'A' cause carbon 14 is found in any living organism and mammals are not the only living organism on this planet
cant be 'C' cause ancient plants still replenish carbon 14 molecules and it'd be impossible to now its age when its still alive
couldnt be 'D' cause yeah while alive organisms do absorb carbon 14 that still defeats the purpose of dating with the carbon 14 method cause its still also taking in carbon dioxide, so the carbon-14 molecules will just keep filling until the organism dies. the whole point of dating with carbon 14 is to measure its deplenish (dying) not continual replenish (living)
dont know if that makes any sense to you but yeah 'B' is the answer, if it isnt im stoopid but im not
Answer:
Cellular differentiation is the process in which a cell changes from one cell type to another. Usually, the cell changes to a more specialized type. ... Differentiation continues in adulthood as adult stem cells divide and create fully differentiated daughter cells during tissue repair and during normal cell turnover.
A gastric intestinal tract is a series of hollow organs joined in a long twisting tube from mouth to anus . The hollow organs that make up GI tract are mouth , oesophagus, stomach , small intestine , large intestine and anus.
<h3>What is the function of GI tract ? </h3>
The function of GI tract is to breakdown of food into Carbohydrates ,fats and proteins.
2) The physiological functions of digestive tract is to digest and absorb food then excrete the waste products with the help of the liver, gall bladder, pancreas,small intestine ,large intestine and rectum.
The topic of small intestine ,I found the most valuable because it performs absorption .
to learn more about Digestive tract click here brainly.com/question/32531
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