__ True or False: __ 1. The increase in the population of prey species will always lead to an increase in the population of their predators. __ 2. Overhunting can cause a rapid decrease in animal populations. __ 3. An increase in food supply will always lead to an increase in animal populations. __ Habitat destruction due to deforestation can decrease a __ 4. Habitat destruction due to deforestation can decrease animal populations by reducing available living spaces. __ 5. A decrease in the population of predators can cause an increase in the population of herbivores. __ 6. A sudden decrease in temperature (cold snap) can lead to a decrease in the population of cold-blooded animals like reptiles. __ 7. Invasive species can cause the population of native animals to increase by outcompeting other species for resources. __ 8. Pollution, such as oil spills, can decrease animal populations by contaminating water sources and food supplies. __ 9. A decrease in the number of predators can lead to a decrease in the number of herbivores due to overgrazing. __ population of animals by cyclos

1. **False.** While an increase in prey *can* lead to an increase in predator populations, it's not *always* the case. Other factors like predator competition, disease, and availability of other food sources can also influence predator populations.<br /><br />2. **True.** Overhunting directly removes individuals from a population, and if the rate of hunting exceeds the rate of reproduction, the population will decline.<br /><br />3. **False.** Similar to the first statement, while increased food supply *can* lead to population growth, it's not guaranteed. Other factors like disease, predation, and availability of other resources (like water or shelter) can limit population growth even with abundant food.<br /><br />4. **True.** Deforestation destroys habitats, removing living spaces, food sources, and shelter for many animals, leading to population decline.<br /><br />5. **True.** Predators control prey populations. A decrease in predators can release prey populations from this control, allowing them to increase in number.<br /><br />6. **True.** Cold-blooded animals rely on external sources of heat to regulate their body temperature. A sudden drop in temperature can make it difficult for them to survive, leading to population decline.<br /><br />7. **False.** Invasive species often *decrease* native animal populations. They typically outcompete native species for resources, disrupt food webs, introduce diseases, or prey on native animals.<br /><br />8. **True.** Pollution can contaminate essential resources like water and food, making them unusable or even toxic for animals, leading to illness and death, and thus population decline.<br /><br />9. **False.** A decrease in predators would more likely lead to an *increase* in herbivore populations initially, potentially leading to overgrazing and eventual habitat degradation, which could *then* lead to a decline in herbivore numbers. However, the initial impact would be an increase.<br />