Question 4
what is the life cycle of a massive star?
giant, dwarf, black hole
black hole, dwarf, giant
dwarf, black hole, giant
dwarf, giant, black hole
question 5
i am an astronomical body; i have my own gravity, and things orbit around me, but i do not produce energy through fusion. what am i?
a star
a galaxy
a planet
an asteroid
question 6
i am made of rock, iron, ice, and gas. when i get too close to the sun, the gas leaves a trail of dust and debris behind me. what am i?
a comet
a meteor
an asteroid
a moon
question 7
what are light-years used to measure?
time
short distances
far distances
light intensity
question 8
what do scientists use to look at astronomical bodies?
optical telescopes
radio telescopes
gamma telescopes
microscopes
question 9
what was one of the inventions galileo galilei was famous for?
the microscope
the telescope
the rocket
the airplane
question 10
which of the following statements about telescopes is false?
the prefix "tele-" means "far."
radio telescopes scientists hear noise from outer space.
gamma ray telescopes are the most widely used telescopes in astronomy.
optical telescopes use curved elements like mirrors to focus visible light from the electromagnetic spectrum.
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Ответ:
Question 5: planet
Question 6: Comet
Question 7: Far distance
Question 8: optical telescopes
Question 9: telescope
Question 10: optical telescopesetc
Ответ:
Bacterial growth in human body is different from bacterial growth on the agar in a petri dish.
Explanation:
We know that in the human body there is the immune system which will interrupt the bacterial growth as they will be recognized as a foreign body and will be destroyed by employing immunological pathways.
Whereas on the agar medium balanced nutrient, pH, salts, amino acids and optimum temperature is provided for the bacterial growth. The desired conditions would be favorable for the growth of bacteria.