Natural selection is species survival and reproduction due to differences in some traits that give them an advantage over others
<u>Answer:</u>
Photosynthesis and respiration are so interrelated with each other that one’s product are used as another’s reactant.
<u>Explanation:</u>
- Photosynthesis is a process used by organisms to convert 'light energy' into 'chemical energy', which is used as a source of energy for the organism.
- Respiration is a process in which glucose and oxygen is used to create ATP for the survival of the organism.
- During photosynthesis 'water and carbon dioxide' reacts in presence of light to create oxygen and glucose.
- Without photosynthesis and respiration life ceases to exist on earth.
The reason they have to be so accurate and precise is because, let's say you were doing a lab or something that was involving chemicals. If you had to put a certain amount of chemicals in your experiment, but when you were doing to the math, you messed up and didn't go back and even bother to fix it, that is a really BIG issue. Because something will probably happen to your chemicals because you might have added to much of something into it. So that's why you always have to be so precise and accurate!
<h2>Calories percentage in fat</h2>
Explanation:
- The number of calories gained when eating different types of food differs. Some food types are more fattening relative to other types.
- The number of calories consumed when eating carbohydrates - 4 calories/ gram * 250 g = 1000 calories
- Calories gained eating proteins -4 calories/gram * 75 g = 300 calories
- Calories gained eating fats- 9 calories/ gram * 60 g = 540 calories
- Total amount of calories consumed = 1000 + 300 + 540 = 1840 calories
- Percentage of calories coming from fats = 540/1840 *100% = 29.3 %
- Hence, the right answer is " 29.3% of calories of her day's intake came from fat"