![File:Arable land needed to produce a fixed quantity of crops (1961 = 1), OWID.svg - Wikimedia Commons File:Arable land needed to produce a fixed quantity of crops (1961 = 1), OWID.svg - Wikimedia Commons](https://upload.wikimedia.org/wikipedia/commons/thumb/e/e8/Arable_land_needed_to_produce_a_fixed_quantity_of_crops_%281961_%3D_1%29%2C_OWID.svg/1200px-Arable_land_needed_to_produce_a_fixed_quantity_of_crops_%281961_%3D_1%29%2C_OWID.svg.png)
File:Arable land needed to produce a fixed quantity of crops (1961 = 1), OWID.svg - Wikimedia Commons
![The P-V diagram relates to a fixed quantity of O_2, assumed to be an ideal gas. The temperature at point C is 140^\circ C. What is the total mass of O_2? The P-V diagram relates to a fixed quantity of O_2, assumed to be an ideal gas. The temperature at point C is 140^\circ C. What is the total mass of O_2?](https://study.com/cimages/multimages/16/g0724315792612087947378.png)
The P-V diagram relates to a fixed quantity of O_2, assumed to be an ideal gas. The temperature at point C is 140^\circ C. What is the total mass of O_2?
![Senescence and rejuvenescence. Age; Reproduction. 276 SENESCENCE AND REJUVENESCENCE a fixed quantity. Among the fishes, amphibia, and reptiles there are, however, some forms in which growth apparently continues during at least Senescence and rejuvenescence. Age; Reproduction. 276 SENESCENCE AND REJUVENESCENCE a fixed quantity. Among the fishes, amphibia, and reptiles there are, however, some forms in which growth apparently continues during at least](https://c8.alamy.com/comp/RE0C31/senescence-and-rejuvenescence-age-reproduction-276-senescence-and-rejuvenescence-a-fixed-quantity-among-the-fishes-amphibia-and-reptiles-there-are-however-some-forms-in-which-growth-apparently-continues-during-at-least-most-of-the-life-of-the-animal-although-it-is-very-slow-in-later-stages-growth-is-apparently-periodic-rather-than-continuous-in-all-these-cases-and-its-continuance-throughout-life-or-up-to-a-late-stage-is-probably-due-to-the-fact-that-these-animals-undergo-partial-rejuvenescence-from-time-to-time-during-periods-of-quiescence-or-star-vation-a-point-which-is-discuss-RE0C31.jpg)