Solve these clues to fill the grid.
- Of or relating to living organisms
- 3 Across
- A physiological need to drink
- 6 Across
- A community of organisms where each member is eaten in turn by another member
- 7 Across
- A bodily process occurring due to the effect of some antecedent stimulus or agent
- 11 Across
- The manner of construction of something and the arrangement of its parts
- 12 Across
- Animal hunted or caught for food
- 14 Across
- A mathematical relation such that each element of a given set is associated with an element
- 15 Across
- Someone who manufactures something
- 16 Across
- What lets us see; the opposite of dark
- 1 Down
- The secretion of an endocrine gland that is transmitted by the blood to the tissue on which it has (plural)
- 2 Down
- Study of the natural world through experiments
- 4 Down
- A system formed by the interaction of a community of organisms with their physical environment
- 5 Down
- A physiological need for food
- 8 Down
- Any animal that lives by preying on other animals
- 9 Down
- Any ___ information or event
- 10 Down
- A community of organisms where there are several interrelated ___ chains
- 13 Down