| A | B |
|---|
| natural selection | the changes that make organisms better suited to their environments develop through this process |
| adaptations | behaviors and physical characteristics of species that allow them to live successfully in their environment |
| niche | an organism's particular role, or how it makes its living in its habitat |
| competition | struggle between organisms with the same needs to survive in a habitat with limited resources |
| predation | an interaction in which one organism hunts and kills another and eats it |
| predator | an organism that does the killing of another for food |
| prey | the organism that is hunted and killed for food |
| symbiosis | a close relationship between two species that benefits at least one of the species |
| mutualism | a relationship in which both species benefit |
| commensalism | a relationship in which one species benefits and the other species is neither helped nor harmed |
| parasitism | involves one organism living on or inside another organism and harming it |
| parasite | organism that benefits from living off another organism |
| host | organism that has another organism living on or in it and is harmed from the relationshipt |
| organism | living thing |
| species | organisms that have similar characteristics and can reproduce fertile offspring |
| traits | characteristics of organisms such as color, size, type of beak, etc. |
| evolution | slow change in organisms over time caused by natural selection |
| Charles Darwin | known for the theory of evolution and natural selection |
| organisms with the best traits to survive reproduce and pass those traits on to their offspring | survival of the fittest |
| pollination | transfer of pollen from male stamen to female pistil of a flower |
| sexual reproduction | when there are two parents that each give half the information and the offspring is different from both parents |
| asexual reproduction | when one parent or organism copies itself and the offspring is exactly like the parent |
| fertilization | when the sperm and egg unite to form the new baby organism or embryo |
| pollination and fertilization | examples of sexual reproduction |
| cells duplicating themselves to grow or putting a stem in water to start a plant | example of asexual reproduction |
| mitosis | asexual reproduction |
| meiosis | sexual reproduction resulting in egg and sperm |
| Flower | reproductive part of a seed plant |
