Sends signals between the brain and body - Nervous Tissue
Protects the skin from bacteria and particles - Epethelial Tissue
Allows shivering to produce ear and maintain body temperature - Muscle Tissue
Provides structural support for the organs - Connective Tissue
With a light microscope one can view the nucleus and endoplasmic reticulum, large vacuoles etc
The resolution of a light microscope is dependent on the wavelength of light that is the main beam of illumination. Light has approximately 0.4 um (UV)- 0.7um (Infrared) wavelength. Organelles smaller than about 0.5 um will be difficult to discern with a light microscope.
With an electron microscope one can view, in addition, even the ribosomes and mitochondria, chromosomes, tubules etc.
An electron microscope can discern very minute details of a cell. This is because its resolution is dependent on the very small wavelength of a beam of electrons which is approximately 0.002 um (about 10,000 times powerful than a light microscope)
Answer:
Rock
Explanation:
Minerals are inorganic substances that occur naturally in nature and have a
a definite chemical composition and a crystalline structure while rocks may consists of one or many minerals together along with some organic remains due to which it may not look shiny and crystalline from outside.
Here, the two characteristics that enable the reader to identify the object given by grandmother to Emily as rock are –
a) Looks ugly on the outside (shows the presence of organic matter)
b) solid purple color with pretty crystals (crystalline structure inside)
Answer:
Astronomy.
Explanation:
Astronomy.
Astronomy is science of stars and cosmos. It is a natural science that analyses the objects and events of celestial bodies. To demonstrate their genesis and evolution, this uses maths, physics, and chemistry. Planets, moons, stars, nebulae, galaxies, and comets are of interest.
The Tropic of Cancer is the latitude circle 23.5 degrees north,whereas the Arctic and Antarctic Circles at ±66.5 degrees latitude.
Answer:
Particulate matter
Explanation:
An electrostatic precipitator is an air filter. For this reason, we can say that the air pollutant that would be captured if electrostatic precipitates were installed in the exhaust systems would be the particulate matter.
An electrostatic precipitator is very effective in controlling atmospheric pollution in an industry, factory or even a plant that emits polluting gases into the atmosphere. This equipment captures the polluting particles, leaving only the clean private gas to be transferred to the atmosphere.
