The correct answer is option (a) Scanning tunneling microscope.
Microscopes are used to see the objects at molecular level. Scanning tunneling microscope( STM) is a type of optical microscope that uses optics(light) and lenses to see the enlarged size of the object. This microscope use a small metal tip under a high voltage. when this tip of microscope is brought close to the metal, the metallic tip of microscope draws electrons from the atom (metal) to be observed. This generates an electric current. There is a computer system attached to the microscope that detects the change in the electric current. Computer plots the change in position of atoms in metal.
Option A is the right one for this question.
The undergrowth of tropical rainforest most likely requires less sunlight.
The tropical rainforest floor receives only 2% of the sunlight; only plants can grow in this region.
The forest floor is a relatively clear of vegetarian, because of the low sunlight penetration.
The skeletal system<span> performs vital </span>functions<span>— support, movement, protection, blood cell production, calcium storage and endocrine regulation — that enable us to survive.</span>
Answer:
I think the answer is the first option, more reliable and harder to use.
Explanation:
I think this because technology is expensive and the most reliable thing we have right now so the other options don't make sense.
I think that it is A. it forms new mountains under the water
