<span>Liquid carbon dioxide forms only at pressures above 5.1 atm; the triple point of carbon dioxide is about 518 kPa at 56.6 C. At this temperature and pressure CO2 will exist as a solid, liquid and gas. You cannot get a liquid by cooling alone - you have to increase the pressure as shown.</span>
Answer:
reproduction? not entirely sure what the question is asking for, but i think its reproduction.
Explanation:
<span>d. only the fittest of sperm and egg combinations will survive.
Others are external fertilization:
</span>a. all of the sperm will fertilize eggs.
b. sperm and egg will be released simultaneously.
c. the number of sperm and eggs produced will be equal.
<span>e. sperm will be protected until they can unite with the eggs.</span><span>
</span>
