Photosystem II is the first step of photosynthesis, where the chlorophyll molecule uses light energy to take an electron from a water molecule.
Answer:
Hey there!
We have:
4 students with 5 marks.
8 students with 6 marks.
10 students with 7 marks.
7 students with 8 marks.
13 students with 9 marks.
3 students with 10 marks.
Thus, the mean is: 
, or around 7.58 marks.
The median is the middle number and since we have 45 people, the middle number would be the 23rd. 4+8+10+1=23, Thus, 8 marks i s the median.
The mode is the most common score, which is 9.
The range is the range of all the values, which is from 5-10. Thus, giving us a range of 10-5, or 5.
Hope this helps :)
Answer: The answer is (4), centuries
Explanation:
Answer:
D.) Organism
Explanation:
On the basis of biological organization, one female arctic fox will be considered as an organism.
Biological organization refers to a hierarchy starts from simplest biological structure to complex biological structures that define life, such as from atoms to biosphere.
So, biome is the community of animals and plants having common characteristics according to the environment; species is also a group of living organism sharing similar genes; ecosystem include different groups with the physical (abiotic) environment and organism is the basic living system,that include at least one cell.
So, one female arctic fox will be termed as an organism and the correct option is D.
