Answer:
D) energy from the sun, air, and water
Explanation:
Plants are producers because they undergo photosynthesis. Photosynthesis is the process of taking sunlight, CO2, and water to produce ATP in the form of glucose and oxygen.
For plants to make their own food they require the reactants of photosynthesis. The reactants are sunlight+
. In other words, sunlight, carbon dioxide (air), and water. Without these reactants, photosynthesis cannot occur.
Things such as soil and fertilizer are helpful to a plant's growth; however, they are not required in the process that creates food for plants.
Protists are eukaryotic organisms that cannot be classified as a plant, animal or fungus. They are mostly unicellular, but others like algae are multicellular. Protists have mitochondria responsible for respiration to produce energy to be used by cells. Additionally, they can be parasites and mostly prefer aquatic or moist environments. They may be classified as animal-like protists (heterotrophs and have ability to move), Plant-like (autotrophs that photosynthesize) and fungi-like (heterotrophs with cells that have cell wall and reproduce by spore forming). Protists reproduce by asexual means (e.g. budding) or sexually. Therefore, in this case we may conclude that they are all parasites and reproduce sexually or asexually.
In unicellular organisms, the process of mitosis serves as a method or form of asexual reproduction, as organisms that are unicellular and are typically prokaryotic undergo mitosis to essentially duplicate and make additional offspring that are genetically identical clones as that of the original parent cell. Mitosis in multicellular organisms serves to replace lost, specifically damaged tissue of the organism, it also is crucial for the growth and development of the organism, as it is this particular portion of the cell cycle, when cells after growing and having their DNA duplicated can they separate and produce more and more cells.
<span>Models are very helpful, but they also have limitations.Details - Models cannot include all the details of the objects that they represent. For example, maps cannot include all the details of the features of the earth such as mountains, valleys, etc.Approximations - Most models include some approximations as a convenient way to describe something that happens in nature. These approximations are not exact, so predictions based on them tend to be a little bit different from what you actually observe. Models do not behave exactly like the things they represent.Accuracy - In order to make models simplistic enough to communicate ideas, some accuracy is lost. For example, ball and stick models of atoms do not show all the details that scientists know about the structure of the atom.</span>
they tend to close the stomata to prevent water loss
