The answer is; D
Spring precedes summer and comes after winter. Spring occurs when the southern face of the earth begins to face the sun (since the earth is tilted), hence received much sunlight and starts to gets longer days and shorter nights.
Answer:
A)
Explanation:
The spring comes when the eath is in the closest located to the sun and the hemisphere is facing the sun directly with the tilting of the earth´s axis of rotation, so the one where the souther hemisphere is coming out of winter is C which is the farest from the sun and not facing the sun directly in the southern hemosphere, so the next position would be spring for the southern hemisphere which would be D.
2. AlCl3
3. H2O
4. Cu
Among the substances listed, copper (Cu) is the one that can't be decomposed by a chemical change. This is because it is an element, composed of a single type of atom, and does not break down further in a chemical reaction.
The substance that cannot be decomposed by a chemical change among the given options is Cu, which stands for copper. In the context of chemistry, substances that cannot be decomposed into simpler substances by chemical means are called elements. Copper, denoted by the symbol Cu, is one such element. Unlike compounds such as HI, AlCl3, and H2O, elements like copper are composed of a single type of atom and therefore cannot be broken down further through chemical reactions.
#SPJ11
The substance that cannot be decomposed by a chemical change is Cu (Copper) because it is an element and cannot be broken down into simpler substances through chemical changes.
The substance among the options provided that cannot be decomposed by a chemical change is Cu or Copper. This is because Copper is an element, and elements are substances made up of only one type of atom. They cannot be broken down into simpler substances by chemical reactions. On the other hand, HI (Hydroiodic acid), AlCl3 (Aluminum chloride), and H2O (Water) are all compounds, which consist of two or more elements chemically combined in a fixed ratio. These can be decomposed into their constituent elements through various chemical reactions.
#SPJ6
A. research question
B. scientific theory
C. scientific law
D.hypothesis
I think its B or D.
Answer:
B. scientific theory
Explanation:
The scientific theory explains the phenomenon observed in the natural world. It is based upon the scientific method. To arrive at the scientific theory a hypothesis is formed, experiments are designed and conducted, resulted evaluated, analyzed and conclusions are reached. scientific theory are based upon experiments that are tested under controlled conditions.
scientific theory
hope this helps :)
did she just undertake?
A. Make a plan
B. Know the background.
C. Identify a need.
D. Test and evaluate.
Answer: identify a need
Explanation:
The engineer has executed the 'Identify a need' step in the engineering process, acknowledging a problem that could be improved with engineering - in this case, sound pollution from highway traffic.
The engineer in the scenario has just carried out the 'Identify a need' step in the engineering process. This step entails the recognition of a problem or the identification of a situation that could potentially be improved via engineering. In this case, the need is for a technological solution to mitigate sound pollution caused by highway traffic noise. This solution could drastically improve many people's quality of life, particularly those living near busy highways. The next steps in the process would be researching and brainstorming potential solutions, developing a blueprint or plan for the chosen solution, and then testing and evaluating the efficacy of the implemented solution against the identified need.
#SPJ2