Biology

1. (Down): The organelle in plant cells responsible for capturing sunlight to make glucose.
3. 3: Evolution & Ecology
5. Selection (Down): Darwin’s theory that individuals with favorable traits are more likely to survive.
7. (Across): The building block of DNA, consisting of a sugar, a phosphate, and a nitrogenous base.
9. (Down): A symbiotic relationship where both species benefit.
11. 2: Genetics & Heredity
14. (Across): The diffusion of water across a selectively permeable membrane.

2. (Across): A trait that helps an organism survive and reproduce in its environment.
4. (Down): Having two different alleles for a particular gene (e.g., Aa).
6. (Down): The type of cell division that results in four haploid daughter cells (gametes).
8. (Across): The process by which organisms maintain a stable internal environment.
10. (Across): The "powerhouse" of the cell where ATP is produced through cellular respiration.
12. (Across): The physical appearance or observable traits of an organism.
13. (Down): The small organelle where protein synthesis occurs.