29. What is E for a system which has the following two steps: Step 1: The system absorbs 60 J of heat while 40 J of work are
performed on it.
Step 2: The system releases 30 J of heat while doing 70 J of work.
C. 90 J
A. 110J
B. 100 J
D. Zero

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.

Ireally don’t know this