<span>4 is a good answer. The question ‘can planting cover crops reduce erosion’ can be easily answered by creating a scientific study. You could create an experimental group where cover crops are planted and a control group where they are not, and measure the erosion of each group. </span>
The concentration and size of boxes the same at all locations is not the same size. The deaths due to cholera vary depending upon the location. The relative sizes represents that died at that certain spot.
Explanation:
The black boxes represent relative numbers of death due to cholera. Cholera is referred to as a disease of poverty because of the lack of social development in the areas in which it occurs. Crowded camps are fertile ground for a cholera outbreak. Other humanitarian crises including flooding and earthquakes, civil unrest or war that causes disruption of water and sanitation systems.
There would be less variability in the genes of the watermelon plants and is denoted as option A.
<h3>What is Variability?</h3>
This is defined as the difference between organisms which is caused by genetic or environmental factors.
Using the seeds from the largest, tastiest watermelons will reduce variability over time because these characteristics will become dominant.
Read more about Genetic variation here brainly.com/question/14926046
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<span>B. HEMOGLOBIN. In sickle cell anemia, </span>the hemoglobin is mutated or abnormal and it gives the red blood cells a crescent shape. This abnormal hemoglobin is referred to as hemoglobin S.
Answer:
Answer is clearly explained in explanation.
Explanation:
In evolutionary biology, the convergent evolution is the process by which organisms from different evolutionary lines independently develop similar adaptations or features in response to similar environmental conditions. North American cacti and African euphoria are clear examples of this concept. Both types of plants have developed thick, juicy stems that are ideal for storing water and protecting thorns, and both are well suited to deal with the rain scarcity and dry climate of the desert regions. The two plant species belong to different plant families and are distant relatives in the phylogeny of flowering plants; However, their common characteristics indicate that they are the product of a converging evolution. The convergent development has enabled the two species of plants to develop similar adaptations to facilitate their survival in the hot and dry desert environment in which they live.