How does carbon cycle through Earth's systems? A. As fossil fuels are burned, carbon dioxide is made available for
photosynthesis in animal cells. When the animals die, carbon is
released into the soil, and the animal remains form new fossil
fuels.
B. Animals absorb carbon dioxide through their skin. Dead animals
release carbon into the soil. Plants absorb the carbon from the soil
and release carbon dioxide during photosynthesis.
C. Plants absorb carbon dioxide through their leaves. Animals take in
the carbon when they eat the plants. Animals exhale carbon
dioxide. Dead plants and animals release carbon into the soil.
D. Photosynthesis releases carbon dioxide into the atmosphere.
Cellular respiration uses carbon dioxide.

The collared lizard is a species found in the desert southwest. male collared lizards show considerable color variation, ranging from brightly colored to a very dull pattern. your goal is to determine the function, if any, of male color patterns in collared lizards, using the scientific method. your tentative explanation is that male color plays a role in attracting females for mating purposes. you predict that females will preferentially choose brightly colored males over dull-colored ones. to test this prediction, you observed the interactions of female collared lizards with their male counterparts. you selected males that were the same age and size, and that differed only in their coloration pattern. you placed equal numbers of the two types of male lizards, bright and dull, in aquariums, along with one female lizard per aquarium. out of 350 aquariums observed, the female chose to mate with the brightly colored male 277 times, and the dull-colored male 70 times. in 3 instances, the females did not mate with either type. create a bar graph of your data, plotting the type of male (dull or brightly colored) on the x-axis. on the y-axis, plot the frequency with which each type of male was chosen by females. using this graph, answer the following question(s). is it reasonable to conclude (i.e., is it supported by the data) that female collared lizards prefer more brightly colored male lizards over dull-colored males?

The buildup of sediments where a river empties into a slow-moving or nonmoving body of water is known as a/an

Why did mendel use pea plants in his experiments? a. they have no alleles. b. they are haploid organisms. c. they reproduce quickly. d. they are all male.