Invasive species are destructive to an ecosystem because they(Select best answer). disrupt food chains
take or destroy ecological niches
out compete native species for limited resources
all of the above

In the african savanna,more wildebeests are born than the environment can support. which is most likely to happen over a period of years as a result

Which ideas did your answer contain? check all that apply. no food for organisms no oxygen in the atmosphere no trees or flowering plants no products based on trees or plants (building materials, medicines, fuels, fibers) no fossil fuels

What's wrong with this ecological pyramid? (multiple choice)1. secondary consumers should be at the bottom of the pyramid2. the sun has an arrow leading to decomposers 3. primary consumers should come after the sun4. energy retained should increase from the bottom to the top5. the sun should be at the bottom of the pyramid