Robert Hooke used a compound microscope to study tree bark, making important observations and coining the term "cell" in his book "Micrographia" published in 1665.
Robert Hooke, a renowned English scientist, used a compound microscope to study tree bark. In the 17th century, Hooke made significant contributions to microscopy and is best known for his book "Micrographia" published in 1665. In this book, he described his observations using a compound microscope, which had two or more lenses to magnify the specimen.
Hooke used a specially designed microscope with an adjustable lens system that allowed him to achieve high magnification and observe fine details of various objects, including tree bark. Using this microscope, he examined thin slices of cork and coined the term "cell" to describe the box-like structures he observed. Hooke's work with the compound microscope and his discoveries about cells laid the foundation for modern cell theory.
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The correct question is:
Which microscope did Robert Hooke use to study tree bark?
B. carbon dioxide
C. oxygen
D. nitrogen
Answer:
B. carbon dioxide is the correct answer.
Explanation:
The greenhouse effect is caused by human activities like cutting the forest and fossil fuel burning, increase the level of carbon dioxide gas(greenhouse gases) and creates global warming.
When the fossil fuel is burned carbon combines with oxygen to form Carbon dioxide and it increases the concentration of greenhouse gases and give rise to global warming.
The Greenhouse gases Carbon dioxide traps the radiating heat from the Earth, this heat is absorbed in the form of infrared radiations and the radiation is emitted which warmer the lower atmosphere and Earth surface,this result in melting of ice sheets, glaciers and warming the ocean
Thus carbon dioxide greenhouse gases which creates global warming.