When the rates of the forward and reverse reactions are equal. The system is dynamic because individual molecules react continuously. It is at equilibrium because no net change occurs.
Answer:
(A) The variation resulting from meiosis and the union of gametes means some individuals will have a chance of colonizing diverse distant environments successfully.
(D) Vegetative propagation is more efficient than sexual reproduction when the current generation is well adapted to the local environment.
Explanation:
Sexual or asexual (options B and C) are not a "last ditch", it pretty much depends on the type of organism and its strategy for survival. There are thousands of organisms that can reproduce either sexually or asexually depending on the environmental conditions.
Option A. Genetic variability is important because sometimes the genetic variability produce during the sexual reproduction processes (crossing over, chromosomes assortment and DNA from 2 parents) can confer an organism the adaptability mechanism to thrive in different environments.
Option D. Since asexual reproduction delivers genetical equal organisms, the offspring is already adapted to local conditions and can colonize at a faster rate.
Answer:
The Calvin cycle uses 18 ATP and 12 NADPH molecules to produce one glucose molecule.
Explanation:
Answer:Ecological succession.
It can be primary or secondary.
Primary succession occurs on a virgin land ,which has not be colonized before. E.g sand dunes or nee community of plant after volcanic eruptions.
Secondary succession occurs: on an area of land that has been cultivated in the past ,e.g abandoned farmland.
Ecological succession begins with the pioneer organisms(plants and Animals) Theses are the first organimds to inhabit the land arear.The changes in species composition continues with gradual transitions which may takes years to reach a natural stable community refers to as Climax community.
Explanation:
Fern sperms are flagellated, which is why ferns are dependent on water for reproduction. Water serves as a medium in which sperms can reach the egg cell for fertilization. The sperm only needs a thin film of water to swim <span>from the antheridium and to the archegonium</span>.
