Which of the following is a true statement about recycling? it takes more energy to make steel from scrap metal than from newly mined ore. after they are collected, recyclable materials are cleaned and processed. there is not enough aluminum cans to make it worth trying to recycle them. the only materials that can be recycled are glass and plastic.

Describe your dna model. which part do the straws represent? the pushpins? the paper clips and the black dots you made with the marker?

Describe the change in phase and temperature as water moves from the oceans to the atmosphere and then returns to earth again as rain. a) evaporation : temperature increases; condensation : temperature decreases; precipitation (rain) : temperature decreases b) evaporation : temperature increases; condensation : temperature decreases; precipitation (rain) : temperature increases c) evaporation : temperature decreases; condensation : temperature decreases; precipitation (rain) : temperature decreases d) evaporation : temperature increases; condensation : temperature increases; precipitation (rain) : temperature decreases

For each of the formulas, classify the formula as either an empirical formula, a molecular formula, or both. nahco3 empirical molecular both