Answer:
The reason why stars are so important is because they have helped humans navigate through Earth . When it was dark these stars would light up the sky giving people light . ... the most important is the Sun, because without that it wouldn't be life on Earth . Earth would just be a rock with ice.
Explanation:
Answer:
it has to be B because it spreads and then gets worse
Explanation:
A deuterium nucleus consists of one proton and one neutron. The quark composition of a deuterium nucleus is
A- 2 up quarks and one down quark
B- 2 up quarks and 4 down quarks
C- 3 up quarks and 3 down quarks
D -4 up quarks and 2 down quarks
The quark composition of a deuterium nucleus is 3 up quarks and 3 down quarks. Thus, option "C" is correct.
<h3>What is the composition of quark?</h3>
The quark composition of a deuterium nucleus is 3 up quarks and 3 down quarks. The overall charge of the deuterium nucleus is +1. Comparing the given overall charge to the chart of the Particles of the Standard Model, the overall charge can be determined from the combinations of the choices.
Thus, option "C" is correct.
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Answer:
Explanation:
Antibodies are proteins manufactured by the body that help fight against foreign substances called antigens.
Antigens are any substance that stimulates the immune system to produce antibodies. Antigens can be bacteria, viruses, or fungi that cause infection and disease
Answer:
The correct answer will be option-D.
Explanation:
The HCl secreted from the stomach makes the food or chyme acidic which can harm the digestive organs like small intestine.
So to protect the small intestine from the acidic nature of the chyme, the chyme enters the duodenum through pyloric sphincter which controls the movement of chyme to intestine and allows the slow movement of chyme,.
The pancreatic juice released from the pancreas contains enzymes and bicarbonates which neutralizes the action of HCl and hence prevent the small intestine.
Thus, option-D is the correct answer.
