Answer: phase 1
A cardiac action potential can be divided into phase 0-4. In phase 0, the sodium channel is opened and sodium will come into the cell which causes a rapid depolarization. In phase 1, the fast sodium channel is closed and K+ channel starts to be opened which makes a small repolarization.
Answer:
Human activity/Global warming.
Explanation:
Global warming is the earth being heated up by green house gases. Green house gases are basically water vapor, carbon dioxide, methane, nitrous oxide, and ozone. The carbon part is manily humans part as it makes up most of the greenhouse gases on earth.
The answers that apply are;
new allele combinations were advantageous in the presence of
parasites with high mutation and reproduction rates.
sexual reproduction increased genetic variability and
survival in a changing environment?
Sexual reproduction increases genetic variability due to combinations of alleles from the parents to the
offsprings. This increases the chances
that a particular combination may be able to confer resistance to the
disease-causing bacteria and hence increase the survival of the roundworms population.
Answer:
A,B,F
Explanation
because these are the most imporatant things on the list
True
However, too much depressant in a person's body can lead to a sudden stop of the heart because of shock as it technically meant to slow down a person's heart rate. Although it's the other way round for stimulant, however neither of them is recommended for a normal "thinking" because the end result of abuse of both is the same Death