Chapter 4 Crossword

Scientific study of interactions among organisms and between organisms and their environment
A group of similar organisms that can breed and produce fertile offspring.
A group of individuals that belong to the same species and live in the same area
All the different populations that live together in an area
A biological community of interacting organisms and their physical environment.
All the living organisms that inhabit an environment
All life forms on Earth
The non-living parts of an organism's habitat.
Place where an organism lives
Any necessity of life, such as water, nutrients, light, food, or space
The number of individuals in a population
Number of individuals per unit area
How population is spread out in an area
Percentage of the population (or number of people of each sex) at each age level in a population
Graph of the numbers of males and females within different age groups of a population
The number of males per 100 females in the population.
Graph showing the number of survivors in different age groups for a particular species
Moving into a population
Leaving a population
Movement from one place to another
occurs when a fixed percentage of new people is added to a population each year resulting in ever-increasing population
An environmental factor that prevents a population from increasing
Largest number of individuals of a population that a environment can support
Growth pattern in which a population's growth rate slows or stops following a period of exponential growth
limits a population more as population density increases
a variable that affects a population regardless of the population density, such as climate
The maximum rate at which a population could increase under ideal conditions