3. how often does the sun's magnetic field reverse?
a. every 11 years
b. every two million years
c. every 100,000 years
d. every 350 days

(! ) what’s fracking and what does it have to do with carbon, carbon dioxide, or fossil fuels?

Match each description to the appropriate biome. tropical savanna desert tropical rain forest taiga tundra has sparse vegetation and very cold temperatures located near the equator and contains trees that form dense canopy layers is very hot and dry, and has plants that need little water has cold winters, heavy snowfall and is dominated by conifers has warm temperatures and is dominated by grasses

What is the compliment dna strand to the following sequence: ttgactaggcta