18. Where do the light-dependent reactions take place?
. in the stroma
b. outside the chloroplasts
c. in the thylakoid membranes
d. only in chlorophyll molecules

the core of the sun is so hot and there is so much pressure, nuclear fusion takes place, hydrogen is changed to helium. nuclear fusion creates heat and photons. when the heat reaches the earth it warms the molecules of the atmosphere, and they warm other molecules and so on.

a few examples of ethical concerns involving genetically engineering of humans include

-privacy of genetically tested people

- potential side effects

-long term effects

maybe because its impossible for balloons to lift a whole entire house.