Answer:
This law states that, despite chemical reactions or physical transformations, mass is conserved — that is, it cannot be created or destroyed — within an isolated system. In other words, in a chemical reaction, the mass of the products will always be equal to the mass of the reactants.
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What is the question it does not make sense I will answer in comments if u explain
The answers to these questions are the following:
1. uses memory cells to fight off an infection from a pathogen: it is a specific response
2. evident by a sneeze, cough, fever, or other physical symptom: it is a non-specific response
3. recognizes antigens present on pathogens and attacks the pathogen with antibodies: it is a specific response
4. builds immunity to specific diseases that had previously entered the body: it is a specific response
5. does not target specific pathogens: it is a non-specific response
Answer: To be able to reach the food they need.
Explanation: Giraffes feed off of high trees. In order to get that food, they were forced to naturally adapt to the height of the trees. Natural selection is a process where organisms that are better adapted to an environment will survive and reproduce. This means that the advantageous alleles of this variant organism are passed on to offspring. Over many generations, the process of natural selection leads to evolution occurring.