Write TRUE if the statement is correct and FALSE if it is wrong.
1. Dropping of a ball from the 4th floor of the building creates fluid friction.
2. It is easier to climb a mountain than to slide down because of the pull of the gravity.
3. An object with greater mass falls at greater speed while ob- ject with lesser mass falls at lesser speed.
4. Greater friction needs lesser force to move an object.
5. More force is needed to move a heavy object.
1. Dropping of a ball from the 4th floor of the building creates fluid friction.
2. It is easier to climb a mountain than to slide down because of the pull of the gravity.
3. An object with greater mass falls at greater speed while ob- ject with lesser mass falls at lesser speed.
4. Greater friction needs lesser force to move an object.
5. More force is needed to move a heavy object.
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1. How many offspring does each organism have?
A. - 1
B. - 8
C. - 2
2. At what age each organism reproduce?
A. - 12 y.o.
B. - 5 mos.
C. - 4 mos.
3. What will happen if living organisms fail to reproduce?
Living things are able to reproduce themselves. If organisms fail to do this, populations will diminish and disappear as their members die from old age, disease, accidents, predation, etc.Organisms produced in this way display little or no genetic variation from the parent organism and are called clones.
4. How can a population grow?
In exponential growth, a population's per capita (per individual) growth rate stays the same regardless of population size, making the population grow faster and faster as it gets larger. In nature, populations may grow exponentially for some period, but they will ultimately be limited by resource availability.
5. How can predators affect the population's growth?
They grow more slowly, reproduce less, and populations decline. As predator populations increase, they put greater strain on the prey populations and act as a top-down control, pushing them toward a state of decline. Thus both availability of resources and predation pressure affect the size of prey populations.
6. How does disease affect population growth?
Fertility, migration and urbanization affect the spread of diseases including tuberculosis, malaria and HIV/AIDS. Increased population densities and unhealthy living conditions in urban slums can ease the transmission of infections. Migration may also increase vulnerability to disease.
7. What factors control the increase of population?
Population growth is based on four fundamental factors birth rate, death rate, immigration, and emigration.
Competition
Predation
Parasitis
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