On the galapagos islands, Darwin studied many creatures, including finches. Explain what he observed and how it relates to nature selection.

Answers

Answer 1
Answer: Darwin observed the beaks of the birds and how the different beaks helped the birds to eat different types of seeds.

This relates to natural selection because certain finches with say a smaller shorter beak would be able to eat only smaller seeds and fruits as to where a finch with a longer larger beak could eat larger bigger seeds and fruits. 

Hope this helped! Have a great day! 

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How do everyday activities like driving a car and using electricity lead to global warming

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Ahh. The chain reaction.
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You know when you are surfing the web, your parents tell you, or you surf the web, that you see some things like "STOP GLOBAL WARMING?" 
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Yep, I have, at least.
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Well, let's see about the chain reaction...
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You see, where does our energy come from? 
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Yes, windmills and solar cells...
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but also nuclear and power plants, no?
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The power plants emit carbon dioxide that contribute to global warming.
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Now, cars do the same. One car may not seems like a lot of carbon dioxide... 
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But... this many cars multiplied by 9 trillion times 9 trillion and much more... is...


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Well, you know the difference.
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They contribute to global warming over a period of time, slowly, because they emit carbon monoxide/dioxide.

How many moles of chlorine are in 300 liters of chlorine

Answers

Answer:

13.39 mol ≅ 13.4 mol.

Explanation:

  • It is known that 1.0 mole of any gas occupies 22.4 L at STP conditions.

Using cross multiplication:

1.0 mole of Cl₂ occupies → 22.4 L.

??? mole of Cl₂ occupies → 300.0 L.

∴ The no. of moles of Cl₂ are in 300 liters = (1.0 mol)(300.0 L)/(22.4 L) = 13.39 mol ≅ 13.4 mol.

What happens when you mix acid and base?

Answers

Acids are chemicals with a pH less than 7 that can donate a proton or H+ ion in a reaction. Bases have a pH greater than 7 and can accept a proton or produce an OH- ion in a reaction. If you mix equal amounts of a strong acid and a strong base, the two chemicals essentially cancel each other out and produce a salt and water. Mixing equal amounts of a strong acid with a strong base also produces a neutral pH (pH = 7) solution. This is called a neauturization and looks like 
HA + BOH → BA + H2O + heat

A chemical reaction by definition forms new chemicals (called the products) from the initial chemicals (called the reactants). It should make sense that the identity of the products formed depends on what reactants we start with. Adding an acid to a base is an example of a chemical reaction, so we should expect to see new products. Although there is a pattern to this type of reaction, ultimately the products formed depend on what acid and what base are used.

I hoped I helped

Explain how scientific advancements have lessened the effects of hazardous events on society.

Answers

Answer:

Scientific advancements can detect some harmful events before they occur and it allows the society to plan for them, thereby reducing the risk of damage that occurs.

Explanation:

Scientific advancements reduce the natural disasters level in a region by evaluating the physical and chemical characteristics of the land.

Also, it develops new medical terminology and concepts that reduce the spread of hazardous diseases in society.

Satellites are used to predict the weather report and by using this report proper precautions can be taken at the time of floods and storms.

Construction of dams and canals highly reduced the risk of water overflowing in the lands.

Answer:  Scientists are able to detect and predict some hazardous events through scientific advancements. By detecting these events early, society can prepare for the events, thereby reducing the amount of damage to people and property caused by the hazardous event.

Explanation: This is the exact answer on edge2020

Which of the following is most important when setting goals?

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Devising a way to achieve the goals is the most important when setting goals.

Devising a way to achieve the goals

Explanation:

The fundamental objective for progress is Breaking down any long haul objectives into littler increasingly feasible objectives that help to advance accomplishment and achievement. While defining objectives, it makes its needs unmistakable for everybody associated with the association.

The reason for objective setting is to people what they have to concentrate on the most during the up and coming quarter, which at that point encourages them to have the option to organize their assignments.

Since it accomplishes an effective, engaged and definitive way by taking the correct activities in a lesser time period throughout everyday life.

Scientists classify rocks into three different types. What is the main basis for the classification system they chose?

Answers

Answer:

The main basis for the classification system is the way rocks were formed. With these criteria there are three different types of rocks:

  • Igneous rocks :  formed through the cooling and solidification of magma or lava
  • Sedimentary rocks : formed by the accumulation or deposition of small particles
  • Metamorphic rocks: formed by the transformation of existing rock types by heating and pressure
1. color of the rock
2. shape of the rock
3. how the rock is formed
4. who discovered the rock
that is it