(g) is the correct answer
Answer:
Some worms are nocturnal and some a diurnal
Explanation:
Variation is difference between cells, individual organisms, or groups of organisms of any species caused either by genetic differences (genotypic variation) or by the effect of environmental factors on the expression of the genetic potentials (phenotypic variation).
NOTE:these are of the same species.
Answer:
69.7231 u to 4 decimal places.
Explanation:
Gallium is composed of two natural occuring isotopes that is Ga-69(60.108%) with mass of 68.9256 amu and Ga-71(39.892%) with mas of 70.9247 amu. The ratio of their masses are 1.0290. The relative abundance of Ga-69 is 60.11% and Ga-71 is 39.89%.
Calculate average atomic mass of Ga-69 :
Ga-69 = 60.108% = 0.60108.
GA-71 = 39.892% = 0.39892.
Atomic mass of Ga = (68.9256⋅0.60108)+(70.9247⋅0.39892)
AM(Ga)=69.7231 u to 4 decimal places.
The ph decreases. W<span>hen you blow out, you exhale carbon dioxide gas, which is soluble in water. The dissolved CO2 (known as carbonic acid) is acidic, and therefore the pH will fall, but not significantly. You will never be able to measurably determine that there is a difference....at least not with pH testing strips. However, if you put a very small amount (just a few grains) of sodium carbonate in about 100 mL of water and add a drop of phenolthalein, the solution will turn pink, indicating that it is a base (a very weak one, about pH 8) Then, if you blow bubbles into the water with a straw for about 2 minutes, the solution will go from pink to clear, indicating that it is no longer a base. Your breath has neutralized the base.</span>
