Hi! I am not sure it is a Guess but I think it is lesser if I am wrong pls let me know.
If they're half life, wouldn't that mean every 5730 years I would double? So 12.5 x 2= 25, 25 x 2 = 50, and 50 x 2 = 100% carbon-14. It doubled 3x so the 5730 x 3 = amount of years the volcano erupted
Answer:
P₂ = 394.4 KPa
Explanation:
Given data:
Volume of gas = 152 dm³
Pressure of gas = 98.6 KPa
Final pressure = ?
Final volume = quartered = 1/4×152 = 38 dm³
Solution:
P₁V₁ = P₂V₂
P₂ = P₁V₁/V₂
P₂ = 98.6 KPa . 152 dm³ / 38 dm³
P₂ = 14987.2 KPa. dm³ / 38 dm³
P₂ = 394.4 KPa
Answer:
C
Explanation:
Control over nitrogenase activity is accomplished by NH4+ prevents expression of the genes that encode nitrogenas.
Nitrogenase synthesis in free-living N2-fixing bacteria is universally under repressor control by ammonia. This, however, is not
the case for rhizobia. A need for N2 as inducer apparently does not
exist. The degree of ammonia repression is unusual in its strength.
Nitrogenase activity is at least 1O,OOO-fold lower in extracts of
NH4+-grown cells versus N2-grown cells.
Answer:
amount of fertaliser--> the independant variable is the one being changed
