1. | Dead or dying |
2. | a genetic process whereby a population or at type of organism is thought to have become better suited to its environment. |
5. | The study of viruses. |
7. | A hard, fibrous tissue found in many plants. |
9. | An organism that absorbs nutrients from a living organism. |
10. | A member of the vertebrate class Mammalia. |
11. | Any substance that increases a solution's hydrogen ion concentration. |
14. | refers to compounds lacking carbon. |
15. | An oval, vascular structure in the uterus that nourishes the fetus. |
17. | The roof of the mouth; the bony portion is the hard palate, the fleshy rear portion is the soft palate. |
18. | the largest bone in the body. |
21. | The union of a male and a female gamete to form a zygote. |
23. | A bundle of neurons connecting the central nervous system with some other part of the body. |
26. | The complex bony structure that in everyday parlance is called the hip bone. |
27. | Pertaining to the nose. |
28. | The earliest of stage of development of a plant or animal. |
29. | A hormone, produced by the ovaries, that prepares the uterus for embryo implantation. |
30. | It is the primary nitrogenous component of urine in mammals and amphibians. |
33. | A nonmetallic chemical element. |
36. | Marked by the absence of life. |
38. | The hoselike structure connecting the placenta to the embryo or fetus; contains the umbilical artery and vein. |
41. | the belly. |
43. | The process producing female gametes. |
45. | The study of the interaction of organisms with each other and with their environment. |
46. | A fertilized egg, produced by the union of a male and female gamete. |
47. | Acquired immune deficiency syndrome. |
48. | the activity of classifying organisms |
49. | To reduce or entirely remove the water content of a substance or body. |
50. | Diffusion of molecules across a biological membrane without the assistance of carrier proteins (this term is used in opposition to "facilitated diffusion"). |