A rat is trying to get food from a garbage can, but is chased away by a crow. The crow eats the food, and the rat must find other food. Based on this information, what is the relationship between the crow and the rat? (1 point) Responses The relationship is mutualistic. The relationship is mutualistic. The relationship is predator-prey. The relationship is predator-prey. The relationship is competitive. The relationship is competitive. The relationship is parasitic.
The relationship is predator-prey.
Leaf-cutter ants cultivate fungus. The ants keep conditions optimal for fungus growth and carry leaf fragments for the fungus to grow on. Then the ants feed on pieces of the fungus. Which kind of relationship exists between the fungus and the ants?(1 point) Responses consumer/producer consumer/producer symbiotic symbiotic parasite/host parasite/host predator/prey
The kind of relationship that exists between the fungus and the ants is symbiotic.
When considering competition between individuals of the same species, what allows some individuals to survive over others?(1 point) Responses Some are better adapted. Some are better adapted. Some choose not to compete for resources. Some choose not to compete for resources. Some do not need resources. Some do not need resources. Some are not impacted by rapid changes.
Some are better adapted.
What might allow an invasive species to outcompete a native species?(1 point) Responses They use the same shelter or space. They use the same shelter or space. They have no predators, so they can spread rapidly. They have no predators, so they can spread rapidly. They are introduced by humans at high rates. They are introduced by humans at high rates. They eat the same food resources.
They have no predators, so they can spread rapidly.
Polar bears hunt for ringed seals by waiting for them to emerge from breathing holes in the ice. Which abiotic change may decrease a polar bear’s ability to hunt?(1 point) Responses increased temperatures increased temperatures increased seal population increased seal population increased ice cover increased ice cover increased competition
increased temperatures
Which component of a marine ecosystem is abiotic?(1 point)
shark
dolphin
algae
water