Describe the sixth mass extinction event and its specific causes
What will be an ideal response?
Currently, most biologists believe that Earth is experiencing its sixth mass extinction event and that we are the cause. The changes to Earth's environment by human population growth, resource use, and development have greatly altered conditions for many species, have driven many to extinction already, and are threatening countless more. The alteration and outright destruction of natural habitats, the hunting and harvesting of species, pollution, and the introduction of invasive species from one place to another have contributed to the threat to Earth's biodiversity.
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Sandstone is an example of a(n) ____
a. pyroclastic rock b. clastic sedimentary rock c. intrusive igneous rock d. metamorphic rock e. chemical precipitate sedimentary rock
It is now feasible for scientists and engineers to change the trajectory of an Earth-crossing asteroid such that it will not impact our planet.
Answer the following statement true (T) or false (F)
Which of the following statements regarding sea lions and fur seals is correct?
A) Their tusks are used for hauling themselves onto icebergs. B) They are called the earless seals. C) They can ascend climb stairs and do other acrobatic tricks. D) They cannot move their rear flippers underneath their bodies. E) They have prominent claws that extend from their fore flippers.
Woody plants that are vines supported by trees are called ____.
A. herbs B. epiphytes C. canopy D. mesquite E. lianas