Answer:
1. DNA copying mistakes made during cell division, exposure to ionizing radiation, exposure to chemicals called mutagens, or infection by viruses.
2. both
Explanation: Since errors can occur when DNA replicates itself, mutations can occur in both asexually and sexually reproducing organisms.
If an least one neutron from U-235 fission<span> strikes another nucleus and causes it to fission, then the chain reaction will continue. If the reaction will sustain itself, it is said to be "critical", and the mass of U-235 required to produced the critical condition is said to be a "</span>critical mass<span>". A critical chain reaction can be achieved at low concentrations of U-235 if the neutrons from fission are </span>moderated to lower their speed, since the probability for fission with slow neutrons is greater. <span>A fission chain reaction produces intermediate mass </span>fragments<span> which are highly </span>radioactive<span> and produce further energy by their radioactive decay. Some of them produce neutrons, called </span>delayed neutrons<span>, which contribute to the fission chain reaction.
Hope this helps you..</span>
Answer:
equal to
Explanation:
This question is depicting the LAW OF CONSERVATION OF MASS/MATTER, which states that matter can neither be created nor destroyed. Hence, in an isolated system, the original mass of the reactants must be EQUAL TO the final mass of the products formed.
In other words, the law states that no matter the change in chemical composition of the reactants in a chemical process, the mass does not change or it remains constant.
Answer:
I think it's the state of the surrounding water because if the water holds impurities it will float and if it doesn't have impurities it will sink