A scientist studies the effects that barnyard grass, a weed, has on the growth of rice other weeds, and insects. The barnyard grass and other weeds, rice, and insects make up which level of the biological organization? A.)All the insects in North America.
B.)All the white tailed deer on a island.
C.) All the Bacteria in a digestive tract
D.) All the single-celled creatures in a sample of pond water

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.

yes

no

blue is scattered more than other colors because it travels as shorter, smaller waves. this is why we see a blue sky most of the time.

some inherited genetic mutations can be good for the offspring, so the answer is different genetic mutations cause many forms of cancer.