How did the formation of the ozone layer allow life to move from water to land?
What will be an ideal response?
The ozone layer formed in the upper atmosphere due to the rising levels of oxygen on earth. The ozone layer shielded the earth from damaging UV radiation from the sun by absorbing the UV rays. Therefore, life could move out of the water and onto land because species were now protected from mutation that arose from UV radiation.
You might also like to view...
A 59-year-old patient with cancer who was receiving high doses of chemotherapy developed a secondary lung infection that was identified as a fungus. The organism disseminated, which ul-timately was fatal to the patient. The organism isolated from sputum exhibited septate hyphae that were dichotomous. The organism is most likely which of the following?
a. Candida b. Cryptococcus c. Aspergillus d. Zygomycetes
The semiliquid substance within the nucleus is called ____
a. nucleoplasm b. nuclear gel c. cytoplasm d. chromatin e. protoplasm
On a very hot day in summer, you go outside and take your temperature, it is 37 degrees Celsius. On another day, this time a very cold day in winter, you go outside and take your temperature, again it is 37 degrees Celsius.
This example illustrates a. adaptation. b. cellular reproduction. c. respiration. d. homeostasis. e. digestion.
Transmitter substances
a. are expelled from the presynaptic cells. b. tend to destroy acetylcholine. c. enter the presynaptic cell to continue the passage of the impulse. d. interact with membrane receptors of the postsynaptic cells. e. are expelled from the presynaptic cells and interact with membrane receptors of the postsynaptic cells.