Tall, dense clouds fill the sky during a thunderstorm, bringing hail, lightning, and the possibility of tornadoes. which type of clouds are these?

Rainbow trout is non- native to the united states. however this species is breeding with the native gula yltrout acientistrecently observed that the hola trout were becoming exitinct what is the cause of their extinction

Which of the following can scientists estimate geologic time? a.observing rock sequences b.radiometric dating c.comparing fossils d.all of these

In russia which of these challenges affects the transportation of both petroleum products and other goods?