O O O O O Which statements are true of lymph nodes? Select all that apply.
They filter lymph as it flows back to the heart.
They are packed with T-cells and B-cells.
They produce red blood cells.
They are all located in the spleen.
They can become inflamed when fighting foreign material or pathogens.
They are grouped in the neck, chest abdomen armnits and aroin

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?