Some relationships between different organisms are shown in the table. Relationship
Description
1
1
2
A lion stalks, captures, and eats a Cape buffalo.
A tapeworm enters the digestive system of a
human and consumes the nutrients in the intestines
so that they are not available to the human.
A cattle egret follows cattle around and eats insects
disturbed by the movement of the cattle, but the
cattle are unaffected.
A green anole and a brown anole use the same
resources to survive in a vacant yard near a pond.
3
Which table correctly identifies each type of interaction described?

When does the circulatory system work with the respiratory system? a. during blood cell formation b. during cellular respiration c. during intestinal digestion d. during a viral infection

Which is an advantage of having memory cells when a pathogen is encountered for a second time. a) the memory cells are what proliferate into clones of cells in response to the binding of an antigen. b) memory cells are vital to the primary immune response in that they immediately recognize pathogens even at the first encounter. c) memory cells are essentially effector cells that are short lived and attack antigens even without having a receptor specific to that antigen. d) it ensures that more lymphocytes with a receptor specific to a particular antigen will be present than in a host that had never encountered that pathogen.

You are working in the lab and are working with the same element but with varying isotopes of the element. you are working with c-11, c-13, c-14, and c-15. what is the average atomic mass of this element? (use periodic table) a- 12 b-15 c-14 d-13