The fossil record indicates that the earliest hominids most likely originated in "Africa," since this is the location from which humans eventually migrated to other locations.
Ion transport or active transport depending on which situation you have.
4. Which of the following methods of soil conservation uses the roots of plants as anchors in the soil?
<span>Planting trees on sloped surfaces.
In this way, soil erosion is minimized as well as the amount of water run off.
5. </span><span>Which of the following soil components results from the breakdown of parent material?
</span><span>Minerals</span>
Answer:
The cholodny-went model was proposed in 1927. This model explains the capability of the shoots to grow in the direction of the sunlight whereas the capability of the roots to grow downwards. The hypothesis suggested that both these directional growth occurred due to the asymmetrical distribution of the plant hormone, auxin. This model has been modified a number of times by other scientists but its general concept is accepted by most of the researchers.
