The greenhouse effect is occurring because Group of answer choices the ozone layer is being depleted by carbon dioxide the amount of carbon dioxide in the atmosphere is increasing the ionosphere reflects low frequency radiation more ultraviolet radiation is penetrating the atmosphere the crystalline structure of the ice in the high clouds is acting like a glass ceiling, keeping the heat in

In pea plants, the allele for tallness (t) is dominant to the allele for shortness (t). in the cross between a tall pea plant and a short pea plant shown below, what is the probability that the resulting offspring will be tall? whats the percent

The content of manganese (mn) in steel was determined spectrophotometrically and with the use of the standard addition method. an unknown sample of mn from a digested steel sample gave an absorbance of 0.185 when analyzed spectrophotometrically. when 5.00 ml of solution containing 95.5 ppm mn was added to 50.0 ml of the unknown steel solution (digested sample), the absorbance was 0.248. calculate the concentration, in parts-per-million (ppm), of mn in the digested steel sample solution.

What does a complete balanced chemical equation include? a. exothermic coefficients b. endothermic coefficients c. valence electrons d. molar coefficients