Answer:
HALF LIFE.
Explanation:
The half life of a radioactive element refers to the length of time that is required for the half of the atoms of a particular sample of radioactive element to decay. For instance a radioactive element that a mass of 120 g and a half life of 2 years will be reduce to 60 g in two years. Half life is usually used to measure the rate of disintegration of an unstable isotope. The principle of half life of radioactive elements can be used to determine the relative ages of rocks.
Answer:
Only a. DNA comparisons of dogs and wolves is valid evidence.
Explanation:
Glucose Metabolism is the breakdown of glucose to release energy from its chemical bonds. It has major steps namely Glycolysis, Fermentation and Cellular respiration respectively. The product of this glucose breakdown which has the most energy associated with it is the Hydrogen with its electrons.
Antibiotics that kill large numbers of gram-negative bacteria are primarily aminoglycosides and some higher generation cephalosporins. The major medical concern in antibiotic usage is antimicrobial resistance which can arise with improper use of antibiotics. On the other hand, higher generation antibiotics that are proven bactericidal can have more detrimental adverse effects for the patient.
