Fill in the blank with the correct number to balance the equation: 4cr + 3o2 → cr2o3. (enter only a whole number. ).

List three questions that will you determine what you do well

Which of the following always exist between two objects having mass ● elastic force ● contact force ●gravitational force ●magnetic force

Scientists observed a rock stratum and discovered some fossils. the image shows the fossils they discovered. what can you interpret from the image? an illustration showing layers rock with fossils embedded in some rock layers1. the dinosaur and the mammoth existed after the trilobites.2. the dinosaur and the armored fish existed before the trilobites.3. the trilobites and the armored fish died before the dinosaur.4. the trilobites and the armored fish were born after the dinosaur.5. the early mammoth is older than the trilobites.