1) Seasons, i.e. in the winter, food is less plentiful, causing more animals to die.
2) Human pesticides. (If many animals eat plants with pesticides and fertilizer, they will die.)
If you mean humans, then one is economics. If someone had less money, they probably won't have as many kids. Another is disasters. I kills many people, and if someone's close friend is killed, they will be mourning for a few weeks, not bothering to "Repopulate"
change in environmental conditions, such as temperature, rainfall, or availability of resources. This can lead to changes in behavior, physical characteristics, or gene frequencies within a population, ultimately driving evolutionary adaptations.
One: size of habitat suitable for habitation. Two: Amount of food/water available. Three: Whether or not, and how many, predators there are. Four: Whether or not, and how many, competitors for one or two there are.
For a characteristic to affect evolution, it must be heritable, meaning it can be passed down from one generation to the next. Additionally, the characteristic must influence the survival and reproductive success of individuals in a population. These two factors are essential for natural selection to operate and lead to evolutionary change.
Variation in the trait within the population and differential reproductive success based on that trait are required for a character or trait to change over time in a population adapting through natural selection. The individuals with traits that confer a reproductive advantage are more likely to survive and pass on their genes to the next generation, leading to an increase in the frequency of those traits in the population over time.
Genetic drift is likely to occur when a small population separates from a larger population. This is because genetic drift is the random change in allele frequencies that happens in small populations due to chance events. Over time, these changes can lead to genetic divergence between the two populations.
Two examples that spring to mind are inflation and population growth.
A low birth rate and environmental hazards are two things that can cause a population to decrease.
A low Birth Rate and environmental hazards are two things that can cause a population to decrease.
I think the two things for population of species if they do not adapt. The answer I think is sea turtles,and salmon.
THERE ARE TWO MAiN THiNGS THAT iNFLuENCE MENTAL WELLNESS: y0uR ENViR0NMENT AND HEREDiTy.
Mass and Distance
Security and healthy relationships
Need and Want
The patients attitude, and what stage the cancer was found in.
Landlines did not change to mobiles. They are two different things.
Change speed of rotation. change direction of rotation.
What two thing's change a sedimentary rock into a metamorphic rock