5th Grade Science › Life Science
In 1859, a farmer brought 24 rabbits to Australia. There were many green plants for the rabbits to eat. The rabbits grew strong and reproduced rapidly. By 1950, Australia had 600 million rabbits! Unfortunately, the rabbits damaged the ecosystem. After that one-hundred-year period, there were no green plants left. Scientists decided to try to lower the number of rabbits by releasing a disease into their environment. The disease killed many of the rabbits. But the dead rabbits created problems for the environment. There were many dead rabbits, but eventually, decomposers cleaned them up.
Why were there no green plants left in the 1950s?
The saguaro cactus has adapted in numerous ways to protect the water that it collects during rare rainstorms in the desert. It has a vast root system that allows the plant to absorb water near the surface during rainfall. It also has thorns that deter thirsty animals from getting inside the stem of the cactus and drinking its water. The saguaro cactus also has a very thick, barrel-shaped stem used for holding water. Plants that are adapted to these dry places like the saguaro cactus, are called xerophytes. They must collect, store, and conserve large amounts of water to grow and flourish in this harsh environment.
Which claim below does this passage support?
True or False: For a seed to germinate, it must receive an adequate amount of water.
True or False: For a seed to germinate, it must receive an adequate amount of water.
The saguaro cactus has adapted in numerous ways to protect the water that it collects during rare rainstorms in the desert. It has a vast root system that allows the plant to absorb water near the surface during rainfall. It also has thorns that deter thirsty animals from getting inside the stem of the cactus and drinking its water. The saguaro cactus also has a very thick, barrel-shaped stem used for holding water. Plants that are adapted to these dry places like the saguaro cactus, are called xerophytes. They must collect, store, and conserve large amounts of water to grow and flourish in this harsh environment.
Which claim below does this passage support?
Which of the following is an example of something that is abiotic?
In 1859, a farmer brought 24 rabbits to Australia. There were many green plants for the rabbits to eat. The rabbits grew strong and reproduced rapidly. By 1950, Australia had 600 million rabbits! Unfortunately, the rabbits damaged the ecosystem. After that one-hundred-year period, there were no green plants left. Scientists decided to try to lower the number of rabbits by releasing a disease into their environment. The disease killed many of the rabbits. But the dead rabbits created problems for the environment. There were many dead rabbits, but eventually, decomposers cleaned them up.
Why were there no green plants left in the 1950s?
Producers make their food. They use a process called photosynthesis to make their food. Photosynthesis uses which of the following ingredients
True or False: For a seed to germinate, it must receive an adequate amount of water.
Producers make their food. They use a process called photosynthesis to make their food. Photosynthesis uses which of the following ingredients