Which of the following could occur as the result of runoff of high nitrogen fertilizers from farmlands near a lake? O a decrease in mineral storage reducing carbon levels of the lake
O an increase in algae growth resulting in low oxygen levels in the lake
O a decrease in pollution resulting in lower ozone levels in the lake area
O an increase in deforestation reducing animal populations in the lake area

Which flexible structure that supports the nerve cord and led to the backbone

Drag each label to the correct location on the image. each label can be used more than once. a scientist introduced mutations in a gene sequence isolated from bacteria. study the sequence, and identify the steps where the mutations may affect the formation of proteins. in the sequence, black letters stand for protein coding regions and red letters stand for noncoding regions. protein will not be changed. protein may be changed. attcgtgttc atcgtgttc atcgtattc attcgtattc

Food webs - transferring energy and matter from one level to another. here you see four food webs. one or more are incorrect. which food web(s) show the correct sequence of organisms, from start to top level consumer? a) a b) d c) c d) a and d