Need the answer very fast How does oxygen enter the capillaries surrounding the lung? A with the cell membrane pumps B through diffusion

When did the first humans appear on earth

Which imaginary line divides Earth into the Northern and Southern Hemispheres?

What system creates coordinates based on a flat map, instead of a globe? A. Cartesian B. GPS C. UTM D. latitude

How do you find absorbance in temperature intensity

Continental crust is younger than oceanic crust. t or f

Why might a water table drop

How did the 1898 discovery of blood types affect society?

Which of the following is a feeding source for fens? aquifers dexfoliants exfoliants nitrates

What system includes oceans, lakes, rivers, and groundwater? a. geosphere b. hydrosphere c. atmosphere d. biosphere

Fungal spores a. are only asexually produced. b. cannot be seen in a light microscope. c. are used to identify fungi. d. are produced by molds but not by yeasts. e. are only produced under harmful environmental conditions