How are the immigration and emigration rates related in a stable population?
Immigration is the addition of individuals to the population from outside which increases the population, and emigration is the loss of individuals which decrease the population. In case of a stable population, the number of immigrants and emigrants remain more or less same, which maintains a stable population.
What are limiting factors whose effects are not influenced by population densities?
Density-independent factors, such as environmental stressors and catastrophe, are not influenced by population density change. While the previously mentioned density-dependant factors are often biotic, density-independent factors are often abiotic.
What is the movement of individuals out of a population?
Emigration – the movement of individuals out of a population and into another population.
Which of the following is not one of the factors that play a role in population growth rate?
Demography. Demography is not one of the factors that play a role in the population growth rate. Demography is a study of human population. The other choices such as immigration, death rate and emigration are some of the factors that play a role in the populatoon growth rate.
What is the movement of organisms into a range called?
Migration
What is the most important source of environmental change on Earth?
The main driver of climate change is the greenhouse effect. Some gases in the Earth’s atmosphere act a bit like the glass in a greenhouse, trapping the sun’s heat and stopping it from leaking back into space and causing global warming.
What describes a population as its size decreases?
immigration. which of the following describes a population as its size decreases. the death rate becomes higher than the birthrate. which are two ways a population can decrease in size. decreased birthrate and emigration.
Which of the following is an abiotic factor in the environment except?
The answer is plant life. Plant life is a biotic factor rather than abiotic.
Which one is not a factor of abiotic environment?
sunlight.
Is a dead log abiotic?
Abiotic factors are non-living, like dead trees, leaves. Sunshine, air, etc.” The microbial community decomposing the log are biotic. The dead wood is abiotic.
Is oxygen biotic or abiotic?
Like water, oxygen (O2) is another important abiotic factor for many living organisms.
Is Cotton biotic or abiotic?
Abiotic stresses are major limiting factors that affect the growth, yield, and development of cotton. It is a fiber crop.
Is mold a biotic or abiotic factor?
Mold is the fungi which is biotic. The mold is filamentous hyphae like fungi which is biotic in nature because it influences the living system to great extent. Abiotic is the chemical and physical part of the environment which affects the living organism but not derived from living organism.