Answer:
only helium makes balloons go up so the answer is helium
Explanation:
Answer:
A biome is described as an area of the planet, which is classified on the basis of plants and animals living in that area. Soil, amount of light, temperature, and water are some of the important factors that determine what type of life exists in a biome.
The temperature, vegetation, and precipitation are the important characteristics of the biome.
Examples of biomes include tundra, desert etc.
Answer:
It is important because plants respond to light depend, logically enough, on the plant's ability to sense light. Phototropism is a directional response that allows plants to grow towards, or in some cases away from, a source of light. Photoperiodism is the regulation of physiology or development in response to day length.
Answer:
Natural selection and selective breeding can both cause changes in animals and plants. The difference between the two is that natural selection happens naturally, but selective breeding only occurs when humans intervene. For this reason selective breeding is sometimes called artificial selection.
Explanation:
