Which of the following could be an appropriate citation for an article with 3 authors? A. Jones, Davis, and Young, 2012
B. Davis, 2012
C. Jones, D and Y, 2012
D. Jones, et al., 2012

D

Explanation: if you have more than 2 authors , you cite the article by using the last name of the author followed by the phrase “et al”

the leaf is an organ of a typical plant, and the main functions are to complete photosynthesis and allow the plant to exchange gas, just like how we have the respiratory system. leaves have the stomata, which collects maintains co2 and o2 levels. this is necessary for cell metabolism. the leaf also collects sunlight using chloroplasts. succinctly, leaves own a pivotal role in sustaining plant life.

a gas, having a molecular weight of 13 kg/kmol and a kinematic viscosity of 0.25 cm2/s, flows through a pipe 0.25 m internal diameter and 5 km long at the rate of 0.4 m3/s and is delivered at atmospheric pressure.