Your answer is
B. Direct observation
Sedimentary rocks are layers of aging rocks. They are combined to each other, forming one big rock. When plates go on top of each other, they will merge and become a sedimentary rock. Hope my answer was useful, and don't forget to make this answer the best!
If the food type changes in a given environment, then the amount of each type of bird beak will change as birds with beaks more suited to the available food will consume more successfully over time. <span>The independent variable of the lab is the type of food that is available to the birds. The dependent variable of the lab is the frequency of each type-size and shape-of beaks. The conclusion will state that favourable traits place one species in a more optimal position to survive in a given envronment.</span>
Answer:
They can not live on their own
Explanation:
The main difference between cells and viruses is that viruses need another cell to infect so that they can reproduce. Cells on the other hand can reproduce on their own.
