<span>One observation would be the physical size of Russia compared to other countries, despite a lack of visible borders from space. In addition, part of Russia's outline would likely be obscured by the various clouds and objects in the stratosphere; this would allow the astronaut to view potential cloud and weather patterns on earth. Also, an astronaut could see outlines of Russia's geography such as mountain ranges.</span>
Answer:
A. spiral galaxies are not pinwheel-shaped
Explanation:
There are three types of galaxies that include spiral galaxy, elliptical galaxy and irregular galaxy.
Elliptical galaxies are round shaped as well as elongated. Elliptical galaxies have both old and new stars but mostly it contains old stars.
Spiral galaxies are pinwheel-shaped due to the regular spinning motion of dust, stars and gas around the galactic center, at speeds of hundreds of kilometers per second which allows the matter to take a pinwheel-shape. Spiral galaxies are made up of lot of gas and dust and forms many new stars which allows the spiral galaxy to shine bright.
Irregular galaxies do not have any definite shape because of the gravitational influence of close galaxies. They also have many new stars.
Hence, the error is foudn in first sentence, where it says that spiral galaxies are not pinwheel shaped. so teh correct option is A.
Answer:
The function of the villi and the microvilli is to increase the amount of surface area available for the absorption of nutrients. Each villus has a network of capillaries and fine lymphatic vessels called lacteals close to its surface.
Explanation:
There, the villi and the microvilli increase intestinal absorptive surface area approximately 40-fold and 600-fold, respectively, providing exceptionally efficient absorption of nutrients in the lumen. There are also enzymes (enterocyte digestive enzyme) on the surface for digestion
B. The temperature of alcohol increases more slowly than water when they are equally heated.
Explanation:
Based on the information provided only, we can infer that the temperature of alcohol will increase more slowly than water when they are equally heat. Also, when left to cool, water will cool faster than the alcohol.
Specific heat is the amount of heat required to raise the temperature of 1g of a substance by 1°C.
- A substance with a high specific heat will require more heat to raise the overall temperature.
- A substance with a low specific heat requires little heat to cause appreciable temperature changes.
- Metals for example have low specific heat that is why they get hot very fast when heated and cools very fast too.
learn more:
Heat capacity brainly.com/question/3032746
#learnwithBrainly
They have all of the above. All living things need an endocrine, circulatory and digestive system to live.
