It helps the plants create oxygen for us to breathe
Answer:During pregnancy, red blood cells from the unborn baby can cross into the mother's blood through the placenta. If the mother is Rh-negative, her immune system treats Rh-positive fetal cells as if they were a foreign substance. The mother's body makes antibodies against the fetal blood cells
Explanation:
D: Surface-water runoff from rain
A. All biomes not dominated by trees typically exhibit considerable seasonality in <span>either temperature, precipitation, or both
</span><span>A biome is composed of various diverging ecosystems that relates with the community. Biomes can either be deserts, grassland, savanna, tropical rain forest, taiga, boreal and etc.</span>
