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anygoal [31]
2 years ago
10

... How is nitrogen obtained by animals?

Biology
1 answer:
Step2247 [10]2 years ago
6 0
Animals obtain nitrogen by eating plants
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Compare and contrast the two types of bonds
stepan [7]

Answer:

An ionic bond is formed between a metal and a non-metal. Covalent bonding is a form of chemical bonding between two non metallic atoms which is characterized by the sharing of pairs of electrons between atoms and other covalent bonds.

Explanation:

There are two types of atomic bonds - ionic bonds and covalent bonds. They differ in their structure and properties. Covalent bonds consist of pairs of electrons shared by two atoms, and bind the atoms in a fixed orientation. Relatively high energies are required to break them (50 - 200 kcal/mol). Whether two atoms can form a covalent bond depends upon their electronegativity i.e. the power of an atom in a molecule to attract electrons to itself. If two atoms differ considerably in their electronegativity - as sodium and chloride do - then one of the atoms will lose its electron to the other atom. This results in a positively charged ion (cation) and negatively charged ion (anion). The bond between these two ions is called an ionic bond.

8 0
3 years ago
What is the importance of open mindedness and skepticism in scientific thinking?
IRINA_888 [86]

Answer;

Open-Mindedness means capable of accepting new and different ideas, while Skepticism means having an attitude of doubt.

Explanation;

-Scientific Attitudes  includes; curiosity, Honesty, Open Mindedness and Skepticism, Creativity.

-Curiosity  is successful scientists are eager to learn more about the topics they study. Good scientists always report their observations and results truthfully. This is especially important when a scientist's results go against previous ideas or predictions.

-Open-Mindedness  involves being capable of accepting new and different ideas while Skepticism is having an attitude of doubt and Creativity involves coming up with inventive ways to solve problems or produce new things.

7 0
3 years ago
In order to classify a mineral, scientists will sometimes scratch the mineral with a piece of unglazed porcelain and then analyz
krok68 [10]
The above-mentioned method is used to analyze the streak of a mineral. Streak can be different from that of the color of the mineral, itself. It is used for soft minerals, and such minerals have their characteristic streaks. So the correct answer to your question is D.
3 0
3 years ago
Read 2 more answers
How did early humans survive without clothes?
blsea [12.9K]
Of course we can survive without clothes. We evolved a hairless body because our ancestor was an ape that was forced to live in the hot, open savanna, where fur is not needed. In fact, many people around the world did not wear any clothes. Native Hawaiians, for example, wore no clothes when the first European explorers arrived. Amazonians and Africans also did not wear clothes. Humans evolved in Africa about 150,000 years ago, and the early humans wore no clothes. Humans started migrating out of Africa about 60,000 to 70,000 years ago. They followed the coast line and went all the way to Australia. These early migrants ended up in places that required no clothes. Only when humans migrated to places like ice age Europe and northern parts of Asia (northern parts of China, Japan and Korea) did they need to wear clothes or animal skins to stay warm. Wearing clothes blocks out the sun and these people were in danger of vitamin D deficiency, which leads to rickets. Rickets can result in muscle cramps, broken or deformed bones and even death. In order to absorb enough UV light to synthesize vitamin D, there was strong selection pressure to evolve lighter skin tones.

The habit of wearing clothes, even in places that do not require them, was spread by European Christians. Basically they forced and/or shamed the natives to wear clothes wherever they went.Of course, not wearing clothes means that humans will no longer be able to live in temperate areas around the world, at least not during the fall and winter months.
3 0
3 years ago
You watch a scientist dissolve some sugar in a liter of water and then place some of this solution into a dialysis bag, tying bo
makkiz [27]

Answer:

shoulda used ziploc?

Explanation:

3 0
3 years ago
Read 2 more answers
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