Answer:
The rock and fossil record shows that all of the changes in the Earth's history have been slow and gradual.
Explanation:
Rock and fossil record are of evolutionary importance, because these records gives ideas regarding the time since existence of life in Earth. This information can be used to to get a clear picture regarding how the living organisms of ancient age interacted with the environment of that time. The records thus obtained from rock and fossil are sufficient enough to conclude that evolution do are taking place which is very slow and gradual in such a way, so that it could provides for adaptability to the changing surrounding environment.
Answer:
Box 1: AA
Box 2: Aa
Box 3: AA
Explanation:
In order to figure out the pedigree, you first have to do a punnet square- kind of like cross-multiplying. EX: For the first box: Aa x AA
For box one, we know that it is Aa, and not AA, because box 2 has to be AA.
We know that because Aa X Aa would give us some "aa" offspring which we do not see in the last generation (see 2nd pic). The only way to get no "aa" offspring is to have an AA X Aa cross.
Yes, plants due perform cellular respiration
The reasoning behind this is because they gain energy through both cellular respiration and photosynthesis. Since photosynthesis requires sunlight, cell resp. allows them to gain energy when there is or isn't light present.
Answer:
1. B
2. A
3. C
4. A
5. A
Explanation:
A nursery bed can be defined as a specially prepared temporary plot of land or garden which serves as a home for raising seedlings (young plants) prior to planting them in the main location (area). Thus, when older trees in the environment or surrounding dies or are cut-off, these younger plants (trees) propagated in the nursery bed are transferred to replace them.
<em>Some of the criteria or requirements for setting up a nursery bed are;</em>
1. Shed: this is one structure essential in propagating young trees.
2. Location/Site: a place near a source of water should be chosen because water is essential for plant growth and coolness from extreme heat caused by the sun.
3. Storage place for tools and equipment: it is important to have a complete set of tools or their substitute to be able to carry out all nursery activities properly.
4. Boxes, pots, and plots for germinating seeds: there are three places to germinate seeds, young plants, and young trees. Pots are used for germinating young trees while boxes and plots are used for raising seedlings.
5. Soil type: different plants need different types of soil. These includes clay, loamy and sandy soil.