*Question*
If if global warming continues, Earth may no longer be able to sustain life, then global warming most threatens the Earth's ability to do what? Answer choices: - Sustain life - reproduce - Melt polar ice caps - growth - protect them - Resist erosion - to move people - Produce fossil fuels
**Answer**
Sustain life

*Question*
If fertilization occurs when gametes fuse to form a diploid zygote, then what fuses to form a diploid zygote during fertilization? Answer choices: - seeds - white - Flowers - pollen - potatoes - orchids - gametes - barnacles
**Answer**
gametes

*Question*
If nitrogen is found in most molecules, then _is found in most molecules.? Answer choices: - glucose - Gold - Energy - food - Polonium - Nitrogen - Helium - heat energy
**Answer**
Nitrogen

*Question*
If uneven warming of the Earth's surface causes wind, then what does uneven warming of the Earth's surfaces cause? Answer choices: - Winter - harm - wind - sweat - Injury - SNPs - force - warmth
**Answer**
wind