Diagram of a bacteriophage​

In which situations is the principle of cross-cutting relationship useful in determining relative age?

Which of the following would be a body response when stepping outside without a coat on a snowy day? a. senaceous glands. secrete more senum b. more liquid is transported by the body to the skin fir insulation c. blood vessels in the skin narrow and contract d. blood vessels in the skin expand

Do plant cells perform cellular respiration?