We grow the vegetation and we get our oxygen from plants and vegetation.
Laws can be tested over and over and their results will still be the same, and laws cannot be disproved. Theories can always be disproved beause they are tested and experimented continously and results can change. Laws can't be theories but theories can be turned to laws. Hope this helps, didn't know an exact answer to that but I hope you can draw your answer from this information.
37. Observation and scientific theory are both related. Because it needs hypothesis and experiment to be able to have an actual data to show.
For example:
If you want to know how a monggo seeds grow on a wet cotton. Then you should be preparing the needed things and perform the experiment. You need to observe to be able to get the scientific theory of how this experiment works. That’s how observation and scientific theory is related. They will always be together in science.
Answer: A. scalp hairs grow constantly throughout life.
Explanation:
Hair is a squamous keratinized epithelium which is consist of multi-layered flat cells. Hair are made up of protein called "keratin".
The statement "scalp hairs grow constantly throughout life" is false because at a particular age or due to several factors scalp hairs stop growing.
Scalp hair growth rate depends on three main factors including sex (female hair grows faster than male), age (hair growth slows with age), and ethnicity (Asian hair grows slower than Caucasian hair).
Scalp hair growth stops because of follicle devitalization when the hair length become two or three feet.
Hence, the correct answer is A. "scalp hairs grow constantly throughout life".
I will choose : Malaria.
Malaria is an infectious disease caused by a parasite of the genus Plasmodium (the most predominant is the falciparum species), spread by the bite of certain species of anopheles mosquitoes. The malaria parasite is mainly transmitted, at night, during the bite by a female mosquito of the genus Anopheles, itself contaminated after stinging an individual with malaria. The parasite infects the victim's liver cells and then circulates in the blood, colonizing the red blood cells and destroying them.
The symptoms are: generalized fatigue, loss of appetite, dizziness, headache, digestive disorders (gastric embarrassment), nausea, vomiting, abdominal pain, diarrhea and diffuse myalgia.
