The answer is plastic. 

Resources are defined as a substance or object in the environment required by an organism for normal growth, maintenance, and reproduction. Resources can be consumed by one organism and, as a result, become unavailable to another organism. When resources are limited, “competition,” increases and some populations of organisms will decrease. Some individuals may even be weaker or smaller without the resources they need.

Natural disasters, environmental changes, and humans can all have an effect on the availability of resources. When a drought occurs, many plants and animals die. When forests are cleared for human use, animals and plants do not have habitat.

Some animals are technically a “resource” for others. The predator prey relationship consists of the interactions between two species and their consequent effects on each other. In the predator prey relationship, one species is feeding on the other species. The prey species is the animal being fed on, and the predator is the animal being fed. Usually these populations go through cycles.

The answer is "all of these would be effected" because all organisms need water. Additionally some animals eat plants, and humans eat animals. 

Resources are defined as a substance or object in the environment required by an organism for normal growth, maintenance, and reproduction. Resources can be consumed by one organism and, as a result, become unavailable to another organism. When resources are limited, “competition,” increases and some populations of organisms will decrease. Some individuals may even be weaker or smaller without the resources they need.

Natural disasters, environmental changes, and humans can all have an effect on the availability of resources. When a drought occurs, many plants and animals die. When forests are cleared for human use, animals and plants do not have habitat.

Some animals are technically a “resource” for others. The predator prey relationship consists of the interactions between two species and their consequent effects on each other. In the predator prey relationship, one species is feeding on the other species. The prey species is the animal being fed on, and the predator is the animal being fed. Usually these populations go through cycles.

The answer is "they feed on the same prey." 

Resources are defined as a substance or object in the environment required by an organism for normal growth, maintenance, and reproduction. Resources can be consumed by one organism and, as a result, become unavailable to another organism. When resources are limited, “competition,” increases and some populations of organisms will decrease. Some individuals may even be weaker or smaller without the resources they need.

Natural disasters, environmental changes, and humans can all have an effect on the availability of resources. When a drought occurs, many plants and animals die. When forests are cleared for human use, animals and plants do not have habitat.

Some animals are technically a “resource” for others. The predator prey relationship consists of the interactions between two species and their consequent effects on each other. In the predator prey relationship, one species is feeding on the other species. The prey species is the animal being fed on, and the predator is the animal being fed. Usually these populations go through cycles.

The answer is building a shopping mall

Resources are defined as a substance or object in the environment required by an organism for normal growth, maintenance, and reproduction. Resources can be consumed by one organism and, as a result, become unavailable to another organism. When resources are limited, “competition,” increases and some populations of organisms will decrease. Some individuals may even be weaker or smaller without the resources they need.

Natural disasters, environmental changes, and humans can all have an effect on the availability of resources. When a drought occurs, many plants and animals die. When forests are cleared for human use, animals and plants do not have habitat.

Some animals are technically a “resource” for others. The predator prey relationship consists of the interactions between two species and their consequent effects on each other. In the predator prey relationship, one species is feeding on the other species. The prey species is the animal being fed on, and the predator is the animal being fed. Usually these populations go through cycles.

The answer is "any disruption in a food chain will have affects on other populations of organisms in the same food chain."

Resources are defined as a substance or object in the environment required by an organism for normal growth, maintenance, and reproduction. Resources can be consumed by one organism and, as a result, become unavailable to another organism. When resources are limited, “competition,” increases and some populations of organisms will decrease. Some individuals may even be weaker or smaller without the resources they need.

Natural disasters, environmental changes, and humans can all have an effect on the availability of resources. When a drought occurs, many plants and animals die. When forests are cleared for human use, animals and plants do not have habitat.

Some animals are technically a “resource” for others. The predator prey relationship consists of the interactions between two species and their consequent effects on each other. In the predator prey relationship, one species is feeding on the other species. The prey species is the animal being fed on, and the predator is the animal being fed. Usually these populations go through cycles.

The answer is "animals spend more time in the sun than they usually would." This would require more water from their bodies to be used in the cooling process when water is already scarce. Most animals spend more time in the shade when water is not readily available.

Resources are defined as a substance or object in the environment required by an organism for normal growth, maintenance, and reproduction. Resources can be consumed by one organism and, as a result, become unavailable to another organism. When resources are limited, “competition,” increases and some populations of organisms will decrease. Some individuals may even be weaker or smaller without the resources they need.

Natural disasters, environmental changes, and humans can all have an effect on the availability of resources. When a drought occurs, many plants and animals die. When forests are cleared for human use, animals and plants do not have habitat.

Some animals are technically a “resource” for others. The predator prey relationship consists of the interactions between two species and their consequent effects on each other. In the predator prey relationship, one species is feeding on the other species. The prey species is the animal being fed on, and the predator is the animal being fed. Usually these populations go through cycles.

The answer is "logarithmic, or "S shaped" curve" because when resources are limited, populations can only increase to a certain carrying capacity then population growth will level out.

Resources are defined as a substance or object in the environment required by an organism for normal growth, maintenance, and reproduction. Resources can be consumed by one organism and, as a result, become unavailable to another organism. When resources are limited, “competition,” increases and some populations of organisms will decrease. Some individuals may even be weaker or smaller without the resources they need.

Natural disasters, environmental changes, and humans can all have an effect on the availability of resources. When a drought occurs, many plants and animals die. When forests are cleared for human use, animals and plants do not have habitat.

Some animals are technically a “resource” for others. The predator prey relationship consists of the interactions between two species and their consequent effects on each other. In the predator prey relationship, one species is feeding on the other species. The prey species is the animal being fed on, and the predator is the animal being fed. Usually these populations go through cycles.

The answer is "all of these."

Resources are defined as a substance or object in the environment required by an organism for normal growth, maintenance, and reproduction. Resources can be consumed by one organism and, as a result, become unavailable to another organism. When resources are limited, “competition,” increases and some populations of organisms will decrease. Some individuals may even be weaker or smaller without the resources they need.

Natural disasters, environmental changes, and humans can all have an effect on the availability of resources. When a drought occurs, many plants and animals die. When forests are cleared for human use, animals and plants do not have habitat.

Some animals are technically a “resource” for others. The predator prey relationship consists of the interactions between two species and their consequent effects on each other. In the predator prey relationship, one species is feeding on the other species. The prey species is the animal being fed on, and the predator is the animal being fed. Usually these populations go through cycles.

The answer is population B, because it has reached carrying capacity and is no longer growing. 

Resources are defined as a substance or object in the environment required by an organism for normal growth, maintenance, and reproduction. Resources can be consumed by one organism and, as a result, become unavailable to another organism. When resources are limited, “competition,” increases and some populations of organisms will decrease. Some individuals may even be weaker or smaller without the resources they need.

Natural disasters, environmental changes, and humans can all have an effect on the availability of resources. When a drought occurs, many plants and animals die. When forests are cleared for human use, animals and plants do not have habitat.

Some animals are technically a “resource” for others. The predator prey relationship consists of the interactions between two species and their consequent effects on each other. In the predator prey relationship, one species is feeding on the other species. The prey species is the animal being fed on, and the predator is the animal being fed. Usually these populations go through cycles.

The answer is "population A" because it's growing exponentially and does not level out.
 
Resources are defined as a substance or object in the environment required by an organism for normal growth, maintenance, and reproduction. Resources can be consumed by one organism and, as a result, become unavailable to another organism. When resources are limited, “competition,” increases and some populations of organisms will decrease. Some individuals may even be weaker or smaller without the resources they need.

Natural disasters, environmental changes, and humans can all have an effect on the availability of resources. When a drought occurs, many plants and animals die. When forests are cleared for human use, animals and plants do not have habitat.

Some animals are technically a “resource” for others. The predator prey relationship consists of the interactions between two species and their consequent effects on each other. In the predator prey relationship, one species is feeding on the other species. The prey species is the animal being fed on, and the predator is the animal being fed. Usually these populations go through cycles.