16. Trachea is not a part of the circulatory system
18. Milk is pasteurized in order to decrease the number of microorganisms
19. The statement “Sexual reproduction leads to the possibility of variation in the next generation” is true
20. Infectious diseases are caused by microscopic organisms that can be transmitted from one organism to another
21. The number 23 represents chromosomes
The answer would be Neurotransmitters
hope that helps
Both of these options are valid scientific hypotheses because the scientific debate is always continuing, and the scientific community never discards a hypothesis. The correct option is C.
<h3>What are the hypotheses?</h3>
A hypothesis is a statement that is constructed before a scientific experiment. They are the data made before collecting the variables from the site.
Like here, the hypothesis is made for reducing the population of shrimps.
Thus, the correct option is C. the scientific debate is always continuing, and the scientific community never discards a hypothesis.
To learn more about hypotheses, refer to the link:
brainly.com/question/18064632
#SPJ4
this is the answer
A.
Wind carries sediment that causes abrasion of exposed rock. this may be correct(:
Geysers, hot springs, and bubbling mud are landscape features that are produced by the source of energy known as geothermal.
Geo means that it is referring to the ground, soil, the Earth, and thermal relates to temperature. So this means that these features have originated due to the temperature of the inner parts of the Earth itself. These have many medicinal benefits and are often found in spas.