1. The general trend of human population growth is that the growth rate of population is increasing over the years
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2. Countries of the world differ in birth rates, death rates and age structure of population and this factor explains why population in different countries grow at different rates.
3. Demography is the study of human population in terms of births, deaths etc is called demography.
4. Demographic transition is the shift from high birth and death rates to high birth and low death rates and finally to low birth and death rates. Demographic transition reduces the rate of population growth of a country.
5. Age structure diagram contains data about individuals who belong to the younger age group. Once they become mature they will contribute to population growth and thus studying the age structure gives an idea the trends of future population growth.
Answer:
Stem cells have the ability to divide <u>through mitosis</u> and produce unspecified cells. Stem cells can be developed into a required tissue because of their ability of <u>differentiation</u>.
Explanation:
A stem cell is a cell that is in an undifferentiated state. This means that it has not specialized in a specific type that carries out a specific function of that tissue, which does not imply that stem cells do not have their own function. The concept of stem cell is due to the ability to originate specialized cells from one or more tissues, depending on the degree of potency or plasticity it has. They are found in all multicellular living organisms. Their main characteristic is that by reproducing through the process of mitosis (they divide into two cells) they can form more stem cells or differentiate, that is, they become specialized cells, in such a way that they are essential for the renewal of cells in different tissues. and to repair them.
Answer:
The answer is option A: True
Explanation:
Exposure to environmental stress or pathogens is the fuel that ensures the fitness as well as the survival of species population. These factors leads to adaptation of the cells of the species to survive.
Answer:
sensory and integration
Explanation:
those are the two main functions.
I’m pretty sure it’s hydrogen if I’m wrong I’m really sorry