[OU.02] In 1957, the Russians launched the first successful orbiting satellite, called Sputnik. Which of these statements best explains why humans should continue to send orbiting satellites to space? They reflect hamful radiations in space.
They provide useful information about space.
They help change weather conditions on Earth.
They stop comets and asteroids from striking Earth.

Recent research by marine biologists suggests that bottlenose dolphins have names for themselves. scientists played sounds they had identified as the names of particular dolphins, putting them through a synthesizer so that they did not sound like the voices of particular dolphins. the researchers found that dolphins would respond to the names of other dolphins that they were related to or associated with, but they ignored the names of strangers. this discovery suggests a much greater degree of self-awareness in aquatic mammals than was previously suspected. if this research holds up, what does it suggest about dolphins?

Which statement is true for bacteria a. bacteria have complex internal structures b. all bacteria are spiral in shape c. all bacteria cause disease in animals d. bacteria break down some foods

What type of graph presents information about how often certain or traits occur?