Which activity would most likely contribute to an increase in the amount of greenhouse gases in the atmosphere?
a. planting trees
b. using electricity
c. reusing plastics
d. biking to school

What must happen before meiosis can begin? a. four gametes must be produced b. the four tetrads must be pulled apart c. dna doubles and produces sister chromatids d. the cell membrane pinches together

The response is the basis for vaccination. primary secondary tertiary none of the above

In tomato plants, mendel found that the allele for smooth seeds (s) is dominant, while the allele for wrinkled seeds (s) is recessive. which of these punnett squares shows crosses between two plants heterozygous for smooth seeds? i need this to be answered as soon as ! sry the picture is bad quality