Answer:
A) radio waves
Explanation:
A police officer using radar for speed control is using radio waves.
Radio waves is one of the forms of electromagnetic radiations that are known.
- Radar is a detection system for spotting objects within its coverage.
- It is a non-ionizing radiation and safe radiation source.
- Radar generally belongs to the low energy part of the electromagnetic spectrum.
- They have large wavelength with very low frequency.
Answer:
Explanation:
Due to the Sun's massive size, its large gravitational pull causes the planets and other objects in the solar system to orbit around it. In orbit around the Sun are the eight planets along with their moons, dwarf planets and many much smaller objects like asteroids and comets.
Chromosome is to cactus as gene is to a needle.
<span>The RNA world is the hypothesized format of chemical life that existed prior to our current DNA and RNA world. In the RNA world, RNA molecules formed in the primordial soup and began to evolve by self-replication and mutation. This led to increased complexity, natural selection of "better" RNA and diversification of RNA based life.</span>
Answer:
A) To make sure that the effect is not occuring through actions in the nervous system
Explanation:
In the above scenario, researchers actually studies the effect of hormone to the organ but they are in a situation to study the effect on organ are either hormone base or nervous system base (neurons). For this reason they will cut the neurons to study the effect of hormone on the organ.
So, to check the effect of hormone they should cut the neurons to make sure these effect are not due to actions of nervous system.
