At 1 atm of pressure and a temperature of 0 degrees celsius, which phases of h2o can exist?
a.) ice only
b.) ice and water
c.) ice and water vapor
d.) water only
e.) not enough data to calculate

B, because water is changing its state from solid to liquid (it's fusion in portuguese, don't know in english), so while it's changing, water has 2 states at the same time.

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.