Answer:
The set of processes that interconvert carbon compounds in the ecosystem includes the photosynthesis of the absorption of co2 into living cells and its return to the atmosphere by combustion, the decay of dead species, and the burning of fossil fuels.
Explanation:
B. Protostome development
Answer:
allele frequency
Explanation:
Allele frequency describes how often an allele appears in a population. This measure is usually expressed in percentage. Allele frequency can describe the variation that exist within the population. It can be calculated as the number of alleles divided with the total number of gene copies in that population.
Change in allele frequencies over a certain short period of time is defined as microevolution. Mechanisms of evolution that can change allele frequencies through time are mutations, natural selection, genetic drift and gene flow (migrations).
For the set of number of subatomic particles given, we determine if it represents an ion if the number of protons and electrons are different. From the choices, only the 2nd choice has different number of electrons and protons. Further, that represent a negative ion as there are more electrons than protons. All the rest of the choices do not satisfy the conditions.