A: In a lab a scientist measures the height of roses that received different fertilizers.
An experiment must include variables. The other three are just measurements, but since the scientist is varying the types of fertilizers used, this better describes an experiment. It is also done in a controlled environment (in a lab) which helps to eliminate other uncertainties.
Pinworms are also known as threadworm or seat worm in some countries. Its Scientific Classification:
Kingdom: Animalia
Phylum: Nematoda
Class: Secernentea
Subclass:
There are different types of pinworms in humans and animals. They spread by touching contaminated object they are also parasitic worms.
When they are breathed in, they can become trapped in the lungs and stay there for many years. Many problems might result in accumulation of such. One would be asbestosis, an inflammatory condition of lungs that can cause shortness of breath. Another would be mesothelioma, a rare cancer that affects the lining of the lungs, chest cavity, or abdomen.
Right answer is c.
DNA is in the form of antiparallel strands twisted as a double helix.
