<span>The answer is A. high pressure. The fusion of two deuterium nuclei can only be done with high temperature and also highpressure to prevent electrostatic repulsion of the proton. The successful combination of the deuterium then creates helium as it all combines.
Source: Objective Pre-Engineering Physics, Objective Questions with a Glossary of Knowledge wrote by Shobhana Sharma/ Google books </span>
Using the graph provided with the question, we are able to find that that for a concentration of 270 micromol per kilogram, the calcification rate is 20 mmol calcium carbonate per meter squared per day.
Using this calcification rate,
30 = 20 * 1 * days
days = 1.5
The deposition will require 1.5 days.
<span>The answer is a. carbohydrates. The amount of potential energy in the molecule depends on the number of C-H bonds in the molecule. Carbohydrates have more C-H bonds. Thus, they can serve as energy storage. Other macromolecules have less C-H bonds. Thus, when energy is needed immediately, complex carbohydrates break down to simple carbohydrates and the energy is released.</span>
Invertebrate doesn't posses "Backbone" whereas Vertebrate chordate have that. That's the only & most important difference between them.
Hope this helps!
