B, the lowest layer is a dinosaur fossil, therefore the mammal fossil was after
Because of their biological point of view which showing their structural resemblance (morphological resemblance) and can interbreed under natural conditions(favour condition) which allow them to produce fertile offspring freely.that's why Asian and African elephants have capable to survive.
mutualism is a mutual relationship such as co-ownership of property where both parties benefit.
<span>
</span>
Chromosomes are thread-like structures located inside the nucleus of animal and plant cells. Each chromosome is made of protein and a single molecule of deoxyribonucleic acid (DNA<span>). Passed from parents to offspring, </span>DNA<span> contains the specific instructions that make each type of living creature unique.</span>
Less people would buy and the economy's health would go down.
