When individuals in a population reproduce at a constant rate, it is called an exponential growth. Populations generally experience this growth under ideal conditions.
A population of organisms that can reproduce fertile offspring is called as species
natural selection
emigration
Directional selection. In this type of selection, the advantageous trait in a population shifts towards one extreme as individuals with that trait have higher fitness and are more likely to survive and reproduce.
Euglena reproduce asexually through a process called binary fission, in which the organism divides into two identical daughter cells. In certain conditions, they can also reproduce sexually through a process called conjugation, where genetic material is exchanged between individuals.
It is called logistic growth.
It is called logistic growth.
Population growth is the term used to describe a constant increase in the number of individuals within a population over a specific period of time.
The number of individuals in the population is the population's size. If a population is small enough you will be able to determine the size by counting the individuals.
hybrids
Exponential growth
Exponential growth :)
A population of organisms that can reproduce fertile offspring is called as species
The definition of Extinct is no living individuals of a species or a non-viable reproductive population of a species of animals. If the species has no ability to reproduce it is extinct even though there are living examples.
natural selection
A species is called the "living dead" when it has dropped to few enough individuals such that there is not enough genetic diversity to build up the population again. For example if there was 1 organism of a species left on earth it would be called the living dead because there is no way for its species to reproduce and live on with a full, genetically diverse, healthy population. A species isn't called the living dead only if it reaches 1 individual, it could be 40, 25, etc. individuals. A species is called the "living dead" when it has dropped to few enough individuals such that there is not enough genetic diversity to build up the population again. For example if there was 1 organism of a species left on earth it would be called the living dead because there is no way for its species to reproduce and live on with a full, genetically diverse, healthy population. A species isn't called the living dead only if it reaches 1 individual, it could be 40, 25, etc. individuals.
Emigration.