TPO30
according to some ancient historians, the greek defended themselves with an ingenious weapon called a "burning mirror", for war with the roman navy. this claim that expressed in the passage is impractical and entirely unconvincing. the first reason, they could do not produce a large flat polished copper because its materials did not exist and we know, a mirror that would focus sunlight with sufficient intensity to set ship on fire would have tobe several meters wide. the second reason, the burning mirror would have to take a long time to set the ships on fire, it approximately take ten minutes time for setting fire so that is not quick enough for attack. therefore, such a weapon would have been very ineffective. the third reason, the Greeks probably were familiar with this weapon but they did burning with flaming arrows but this weapon is effective for a few distance so the Greeks have to produce a better and more effective weapon like burning mirror.
- In the past century, the steady growth of the human population and the corresponding increase in agriculture and pesticide use have caused much harm to wildlife in the United States—birds in particular. Unfortunately for birds, these trends are likely t 40
- TPO30
- The golden frog is a small bright yellow amphibian that lives in and around mountain streams in Panama The species is severely endangered because of a fungus that infects the frog through its skin and inhibits the frog s critical life functions such as br 60
- Do you agree or disagree with the following statement?It is more important for students to understand ideas and concepts than it is for them to learn facts.
- In 1938 an archaeologist in Iraq acquired a set of clay jars that had been excavated two years earlier by villagers constructing a railroad line. The vessel was about 2,200 years old. Each clay jar contained a copper cylinder surrounding an iron rod. The 3