Answer:
After 48 hours amount left = 6.25 g
Explanation:
Given data:
Half life of potassium = 12 hours
Total mass = 100 g
Mass left after 48 hours = ?
Solution:
Number of half lives passed:
Number of half lives = Time elapsed / half life
Number of half lives = 48 hours/ 12 hours
Number of half lives = 4
At time zero = 100 g
At first half life = 100 g/ 2 = 50 g
At 2nd half life = 50 g/2 = 25 g
At 3rd half life = 25 g/2 = 12.5g
At 4th half life = 12.5 g/2 = 6.25 g
Answer:
sharks are not cold blood killers because they don't kill for fun they kill because they are confused because when they see a human in the water swimming or splashing so they might try to investigate but sharks have more to fear to us than we do to them
::) hope this helps
Answer:
Natural selection.
Explanation:
Natural selection is when organisms who are most adapted to their environment survive and pass on their genes while those with "unfit" genes die and don't get the chance to reproduce! This slowly creates a population that is most well suited to their habitat. Hope this helps again LOL! :)
DNA and RNA both contain a cyclic nitrogenous base, a posphate group and a five-carbon sugar. These are the base units of nucleotides which make up nucleic acids. DNA contains the nitrogenous bases; adenine, thymine, cytosine and guanine wheresas RNA contains the bases; adenine, thymine, cytosine and urasil. DNA codes for the nucleotides in an RNA molecule, whereas DNA codes for the amino acid sequence in a protein
Answer:
they attach to the bones.
