Answer:
Explanation:
A food chain is different because it shows what organisms eat in a straight line, in a chain. For example, a bird of prey can eat a snake that previously had eaten a frog and the frog ate a grasshopper and so on. But this tells us very little. A foodweb will tell us how all those animals are connected and what they eat in a web, not just a line.
Answer:
B. The R group
Explanation:
The R group is the part of an amino acid and is the only one that varies and is what defines its properties.
The answer is A. Differentiation
Answer:
d
Explanation:
provides animals with homes letting them breed
Answer:
ecology =environmental scientist
geology=Rock analyst for plate movement
zoology=veterinarian
biology =researcher of diseases
astronomy=astronaut