Which is present only in Eukaryotic cells?
A. Cell membrane
B. chromosomes
C. DNA
D. nucleus

The carbon cycle is best defined as a process in which a. carbon changes from inorganic forms to organic forms and back b. carbon is changed into other elements such as oxygen or nitrogen c. carbon is continually created from the sun’s energy by plants d. carbon is consumed and regenerated from other elements such as oxygen and nitrogen

In a vegetable garden 45 bean plants have been eaten by deer 5 are untouched what is the frequency of bean plants in the garden that have been eaten?

According to cell theory; which structures carry out the basic function of living things? a. atoms b. organs c. cells b. nuclei