The correct answers are option A, B and C
The scientific evidences that show that the modern continent now was once a part of the single continent.
The fossils of similar life forms have been found on the different continents because they were once joined and when they separated fossils of those animals were found on the different places.
The coastline of some continents shows that they once excited together.
Some of the continents that exist separately today have similar types of rocks .
the answer to this question is all of these (a,b,c)
three examples of bacteria billions of years ago are the coccus, bacillus, and spirochete
Bacteria billions of years ago played a critical role in shaping the Earth's atmosphere and the development of life. Cyanobacteria, archaea, and stromatolites are examples of bacteria from that time.
Billions of years ago, bacteria played a crucial role in shaping the Earth's atmosphere and the development of life. Some examples of bacteria that existed back then include:
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toward, mountain ranges. your welcome!!!!
Electron microscopes' specimens can be stained for contrast, while light microscopes' specimens appear black and white
Electron microscopes are used for dissections, while compound light microscopes are not.
Electron microscopes use electron beams and electromagnetic lenses, while compound light microscopes use light and ocular and objective lenses.
Explanation:
D) Electron microscopes use electron beams and electromagnetic lenses, while compound light microscopes use light and ocular and objective lenses.
Microscopes are instruments used for viewing microscopic cellular structures, not visible with the human eye. With an arrangement of lenses, and manipulation of light or electrons, these magnify very small objects. Light microscopy uses light and multiple lenses, while electron microscopes use electrons. These create larger images of objects.
While light microscopes with a resolution power of 0.2 um can view objects at a magnification x1000, electron microscopes are capable of a much smaller resolution at 0.5 nm and magnification of x100,000.
The wavelengths of light in the visible part of the eletromagnetic spectrum (visible light is between 390 nm and 760 nm,) are manipulated in light microscopy. The visible light is passed through the biological sample where it bends, as it travels through multiple lenses. This is often usable on live organisms. Thus the observer can look at cells as they undergo division or locomotion. Resolution describes the shortest distance, where two objects are still visible as distinct bodies. With light microscopes, one may view objects between a millimeter (10-3 m) and a fraction of a micrometer at 0.2 thousands of a millimetre or 2 x 10-7 m.
Unlike light microscopy, electron microscopy involves the manipulation of electrons through the apparatus, under a vacuum. As the beams of electrons have shorter wavelengths than light particles, the images produced have higher resolution and can be seen more clearly. The sample is meticulously prepared, and is typically not made up of live cells; EM can be used in viewing subcellular components, such as organelles and can view structures as small as atoms at 1/10 000 000 of a millimeter, 10-10 m.
Learn more about cellular life at brainly.com/question/11259903
Learn more about tissue types at brainly.com/question/8487952
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The correct option is (D) Electron microscopes use electron beams and electromagnetic lenses, while compound light microscopes use light and ocular and objective lenses.
A microscope is an instrument that is utilized to amplify small objects. A few microscope might be utilized to notice an object at the cell level, allowing researchers to see the state of a cell, its nucleus, mitochondria, and different Organelles.
Electron Microscope utilizes a light emission and their wave-like qualities to magnify an object's image. The Light Microscope employs visible light to detect tiny objects.
Hence, the correct option is D.
.Learn more about Microscope here,
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Answer and Explanation:
Even though Northern seals display a dark brown skin color, their pups are born with a fluffy white coat. This allows them to camouflage with the environment as they are unable to swim like the adults, keeping them away or hidden from predators.
Once they are around three weeks old, they start to lose this layer and begin to look like the "normal" seals.
Moreover, due the predominant climate in which they live, the color of the fur depends on genes and, therefore, enzymes. These enzymes are present during cold temperatures and, due to the warm conditions of the womb, these enzymes are denatured. After the seal pup is born, its cells produce a higher amount of enzymes to adjust to the temperature of their habitat and stays with the brown color to maintain homeostasis.