Which of the following are physical characteristics of blood?
1. it is more viscous than water
2. its temperature is about 38˚c (100.4˚f)
3. ihe ph is slightly alkaline
4. it is about 8% of one’s total body weight
5. its color is always a bright red.

Blood is slightly more viscous then water, pH is slightly alkaline it is about 8% of ones body total body weight the rest of the options are slightly wrong.

Explanation: Blood is red in colour, a dark red when it is deoxygnated and bright red when oxygenated. Its normal pH is 7,4 making it slightly alkaline and it accounts for 8% of one's total body weight with 92% being water. Its temperatures ranges around our normal body temperature which is 37°C.

the electromagnetic energy from the sun arrives in the form of visible and invisible light.