Almost all viruses are so small they cannot be seen without an electron microscope, and they often consist of just a nucleic acid (either DNA or RNA) in a protein capsule.
Answer:
They consist mainly of iron-nickel metal with small amounts of sulphide and carbide minerals. During the decay of radioactive elements in the early history of the solar system, many asteroids melted and the iron they contained, being dense, sank to the centre to form a metallic core.
Explanation:
Hope this helps luv
The question above is about an experiment that was performed on eyes.
The experiment involves covering the left eyes of the experimental subject while the right eye is exposed to light at different distances and the correspondent size of the pupil measured.
In the graph given for the experiment, the largest decrease in the size of the pupil take place between 7 and 8 distances. At distance 7, the size of the pupil is 4mm while at distance 8, the size is 1mm, which means that, there is a decrease of 3mm in pupil size. This is the largest decrease on the graph.
- double membrane
- they have their own DNA
- size similar to prokaryotes
