Becky wants to model an ecosystem. Which of the following modeling tools would best help her illustrate an ecosystem? A.
a rubber ball
B.
a terrarium
C.
a map
D.
a set of building blocks

2positives of biotechnology: 1. plants have become more resistant to viruses and other communicable pests.2. with the of biotechnology, we have been able to produce better tasting fruits as well as vegetables.2 negatives of biotechnology: 1. biotechnology poses a number of environmental threats. genetically modifies crops often infect monarch butterflies and other insect species.2. viruses could combine with crops.