Abiotic or Biotic?

Coral

Abiotic or Biotic?

Daphnia (Water Fleas)

Select all of the examples of ABIOTIC factors that can disturb an ecosystem.

Select all of the examples of BIOTIC factors that can disturb an ecosystem.

Which of the following would help maintain and enrich the biodiversity of the ecosystem in your home garden?

Determine which of the following options makes the most sense to maintain the biodiversity of your home garden.

African Elephant populations have decreased because of poaching for illegal ivory trade. What is the effect of the overhunting of these animals on the ecosystem?

Many animals and plants are in danger of extinction. Extinction is the complete disappearance of a species.

Choose the statements below that could put a population at risk for extinction. Select all that apply.

An ecosystem with biodiversity is better able to support life and can provide more types of food, shelter, and resources for the organisms living there. Having many species may also increase an ecosystem's ability to handle stress or damage. If one species is wiped out by a disaster or disease, another species may be able to fill the same role in the ecosystem. How might biodiversity help a coral reef? Select the THREE best choices.

Does the amount of energy transferred between trophic levels increase or decrease up the food chain?

As the population of foxes increases, the rabbit population ____. Use the predator–prey graph showing rabbit (prey) population size in green and fox (predator) population size in orange over time to determine the relationship.

This food chain shows organisms in an estuary ecosystem. If the population of bottlenose dolphins decreases, the population of bull sharks will likely ______, and the population of silver perch will likely ______.

Given the food web, find a food chain that correctly shows the flow of energy from a producer to a decomposer.

A scientist conducts an experiment to determine the effect of barnacles on plankton in tide pools. She added barnacles to half of her tidepools and did not have barnacles in the other tidepools. She recorded the average number of plankton per square meter. Which of the following statements represents the data illustrated in the graph?

Bacteria in your gut get food from you and you get vitamins that the bacteria produce. This type of relationship is

A wasp lays its eggs on a caterpillar and once the eggs hatch they will burrow into the caterpillar’s body and eat the caterpillar to stay alive. This type of relationship is

Orchids grow on the branches of trees and receive adequate sunlight and nutrition but they do not harm the tree in any way. Based on this description, identify the type of relationship.

Tropical pitcher plants can get nutrients from the feces of woolly bats. A woolly bat roosts in the upper part of the plant’s trap, gaining protection from predators and bad weather, while the plant absorbs nutrients from the bat’s waste. Based on this description, identify the type of relationship.

Foxes and wolves both eat rabbits. What do you predict will happen if the population of rabbits declines?

Organisms that break down wastes and dead organisms and return raw materials to the environment.

Two parents produce offspring that will share characteristics of both parents.

The great variation of life on Earth. It increases the stability of a species, helps ecosystems adjust to disturbances, and increases the productivity of an ecosystem.

Biotic and abiotic factors that determine the carrying capacity of an ecosystem. They restrict the growth of populations.

Maximum population size of a species that can be sustained by that specific environment based on the resources available.

Below is a food chain from a grassland ecosystem in Wyoming: wild oat → white-tailed jackrabbit → long-tailed weasel → great horned owl. Use the information in the food chain to choose the option that correctly fills both blanks: "The producer in this food chain is the _____. It is eaten by the _____."

Decreased frog population leads to _____ fly populations because there are fewer predators hunting them.

A tropical coral reef is a type of ecosystem in the ocean. Corals provide shelter for fish, crabs, eels, and many other organisms. These coral reef organisms are prey for larger animals, such as sea turtles, sharks, and dolphins. Most of these organisms need tropical coral reefs in order to survive and reproduce. When the ocean becomes more acidic, the coral populations decrease. Based on the passage, would this change lead to a positive or negative effect on the ecosystem?

Which model accurately describes the cycling of matter and flow of energy through the ecosystem?

The graph shows changes in the population size of water fleas over 6 months. Estimate the carrying capacity for the water flea population shown.

The sixth mass extinction is driven by human activity. Agriculture is responsible for 90% of global deforestation and accounts for 70% of the planet’s freshwater use, devastating the species that inhabit those places. Where and how food is produced is one of the biggest human-caused threats to species extinction and our ecosystems. To make matters worse, unsustainable food production and consumption are significant contributors to greenhouse gas emissions that are causing temperatures to rise. The climate crisis is causing everything from severe droughts to more frequent and intense storms. Increased droughts and floods have made it more difficult to maintain crops and produce sufficient food in some regions.

Which of the following claims is supported by evidence in the article? Select all that apply.