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Biology Crossword

Across
These are the nonliving factors of the environment.
An organism facing extinction through destruction of a habitat.
A random error/change in the DNA sequence .
This is inherited characteristics that increase an organisms chance of survival.
Biochemical process used for determining the order of the nucleotide bases, adenine, guanine, cytosine, and thymine.
Process by which organisms require traits through sexual reproduction or mutation.
When two or more organisms in a population in a community rely or need similar limiting resources.
Organisms that are brought into a new environment, sometimes accidentally, sometimes on purpose.
These are parents, parents of parents, etc.
Term used to describe the fact that there are only a set amount of resources available to species.
This is a change in the genetic makeups of a population of or a species overtime.
This is the ceasing of the existence of any particular species.
Down
All the individuals of a species that live together in one place at the same time.
This suggests that species adapt and change by natural selection and the changes aid in the survival of the organism.
The process of organisms adaptability to their environment over time.
Number and variety of living organisms.
The condition where an organisms number exceed the carrying capacity of its habitat.
Physical features shared by organisms with common ancestry.
The conditions that surround someone or something.
Groups of reproducing populations that are isolated from other groups.