Answer:
1. High pressure: Happens when air cools and it becomes denser...
2. Low pressure: Happens when warm air rises...
3. Cold front: Cold air mass is replacing a warm air mass...
4. Warm front: Warm air mass is replacing a cold air mass...
5. Sun: Is necessary for evaporation to take place.
6. Nimbus clouds: Dark clouds that have rain or snow falling.
7. Cumulus clouds: Fluffy, dense clouds most composed of droplets.
8. Atmosphere: The layer of gases that surround the Earth.
9. Nitrogen: Makes up 78% of Earth's atmosphere.
10. Troposphere: Lowest layer of Earth's atmosphere. Where we live. Where we find most weather.
-Hope this helps.
<h3><u>Answer;</u></h3>
A. <em>18 hydrogen atoms </em>
<h3><u>Explanation;</u></h3>
- <em><u>Alkanes are group of hydrocarbon that are saturated</u></em>. They are saturated in the sense that each carbon atom has maximum number of hydrogen atoms.
- <em><u>The homologous series of alkanes has a general formula of CₓH₂ₓ₊₂.</u></em>
- Therefore,<u><em> an alkane with 8 carbons will have; (2×8) +2 = 18 hydrogen atoms. </em></u>Thus, the formula of the hyrocarbon will be; C₈H₁₈.
Answer: d. Extracellular matrix was discovered more than 20 years ago.
Explanation:
According to biological sciences, the extracellular matrix is a matrix that consists of three dimensional network of extracellular macromolecules such as enzymes, collagen and glycoproteins which provide structural and biological support for surrounding cells as well.
It is found that it is discovered over 20 years ago in the matrix formed in the mouse EHS sarcoma. Therefore, correct answer is (d).
The scientific method's foundation is best described as "the process of hypothesis and testing through which scientific inquiry happens." Thus, the correct option is D.
<h3>
What is scientific method?</h3>
The scientific method is a set of actions that are followed in order to develop scientific knowledge.
The scientific process includes the following steps:
- To make observations on a particular natural occurrence and then generate questions based on those observations.
- To answer these questions, you must propose a credible explanation (i.e., a hypothesis).
- To put the working hypothesis to the test using experimental and/or observational methods.
- To gather information in order to confirm or refute a working theory.
- Analyze the findings and develop conclusions.
For more information regarding scientific method, visit:
brainly.com/question/17216882
#SPJ1
