Active transport requires the help of carrier proteins, or “pumps”. ... Active transport is key to the function of a cell. It helps the cell control how much of certain ions such as water, sodium, or potassium pass through the cell membrane. Without active transport, a cell would not be able to maintain homeostasis.
Iii. ii. Plants need five things in order to grow: sunlight, proper temperature, moisture, air, and nutrients. These five things are provided by the natural or artificial environments where the plants live. If any of these elements are missing they can limit plant growth.
Mountain chains that are now separated by bodies of water on different continents would match up if these continents are placed next to each other, as they were when pangaea existed.
1/8 teaspoon , 1/4 teaspoon, 1/2 teaspoon , 1 teaspoon , 1 tablespoon
