How do we know that a golden retriever and a beagle are the same species even though they look so different?

Cells are adapted to preform specific functions. which of the following terms refers to this capability?

An ecologist studied the same species of deer during the summer and the winter. she noticed that during the summer, when there was plenty of food, the deer were energetic and playful. however, during winter when food was scarce, the deer moved more slowly and did not run unless they needed to escape a predator. which scientific fact is best supported by her observations?

What part of the cell does 9 represent? a. cytoplasm b. lysosome c. ribosome d. centrosome