Which example is a representation of the amount of chemical energy at each trophic level? a. joule b. primary productivity c. energy pyramid d. food chain

Type the correct answer in each box. use numerals instead of words. if necessary, use / for the fraction bar. the following chemical equation shows the combustion of ethane. balance the equation by filling in the coefficients. c2h6 + o2 → co2 + h2o

Which individual below would be considered heterozygous? a. dd b. dd c. dd

100 points and brainlest its 6th grade work compare the parts of a cell and the cell as a whole to another common nonliving system (i. e., a car, a city,