Asunflower is an angiosperm, and a gingko is a gymnosperm. which best describes the life cycles of sunflowers and gingkoes? i. both the sunflower and gingko have seeds. ii. both the sunflower and gingko have cones. iii. the seeds of sunflowers are protected by a fruit; the seeds of gingkoes are not protected by a fruit. iv. the life cycle of sunflowers involves double fertilization; the life cycle of gingkoes involves single fertilization. i, ii, and iii i, iii, and iv ii, iii, and iv i, ii, and iv

The correct answer is option I, II and IV.

An angiosperm refers to a plant, which exhibits flowers and generates seeds enveloped within a carpel. The angiosperms are a large group and involve shrubs, herbaceous plants, the majority of trees, and grasses. A gymnosperm refers to a plant, which has seeds unprotected by a fruit or an ovary. The gymnosperms comprise of conifers, ginkgo, and cycads.

In the given case, both the sunflower (angiosperm) and gingko (gymnosperm) are seed-producing plants. However, the seeds of a sunflower are safeguarded by a flower or a fruit, while in case of Gingkoes they are not. Also, sunflowers include double fertilization, while the Gingkoes involve only a single fertilization.

4.) metal

"-the movement of carbon from the nonliving environment into living things and back to the environment

-carbon is the essential component of proteins, fats, and carbohydrates (which make up all organisms)

-carbon exists in air, water, and living organisms

-producers convert carbon dioxide in the atmosphere into carbohydrates during photosynthesis

-bacteria in the atmosphere cycles through the system in filtration units

-in cellular respiration, carbon is released back into the atmosphere as carbon dioxide

-some carbon is stored in limestone (forming one of the largest "carbon sinks" on earth)

-largest carbon reservoir on earth= limestone

-carbon stored in the bodies of organisms as fat, oils, or other molecules may be released into the soil or air when the organism dies

-this may form deposits of coal, oil, or natural gas (fossil fuels, which increased the atmospheric carbon dioxide)

-fossil fuels store carbon left over from bodies of organisms that died millions of years ago

-they are located in the surface of earth, deep within the earth and beneath the ocean floor."    

it is either c or d and i know for sure it is not a or b