Which three elements make up most of the human body? A. B, C, Ne B. Ba, N, Sn C. C, H, O D. Au, Ag, C

Marsha is looking at the cross-section of a stem under a microscope. Based on the plant tissues seen here, Marsha is most likely looking at Meristematic tissue.

Explanation:

• Meristematic tissue can be seen only through microscopic because it is present at the tip of the root.
• It is the area where the roots are grown and the dividing cells are produced.
• Meristematic is a type of plant tissue where the cell division takes place.
• The other type of plant tissue is the permanent tissue, these are the tissue that can not take place in cell division.

Answer:C- Vascular Plant

Explanation:

The picture shows the degradation of the forest, which leads to a decrease in the number of deer, bears, and mushrooms because it plays a major part in the ecosystem.

Why trees are important for the forest ecosystem?

Trees are the producers in an ecosystem, so all the organism in a forest ecosystem is depends upon the trees, they also provide shelter for the organisms.

In an ecosystem, all living organisms are lived in a particular area, depending on one another for their energy needs.

Through the process of photosynthesis, plants make their own food and this energy transfer to subsequent tropic levels. Consumers get their energy needs from the producers, and plants are the main producers of the ecosystem.

Therefore, in the next few years in pictures, the number of deer, bears, and mushrooms is decreased, hence option B is correct.

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Answer: deer, bears, and mushrooms will all decrease in numbers

Explanation: trees are the only producer in this ecosystem. Without any trees, all other populations will decrease.

Answer:

Pollen from a yellow daisy travels across a stream and pollinates an orange daisy.

Explanation:

Gene flow refers to the movement of genes from one population to another population of the same kind.

From the alternatives given, Pollen movement from a yellow daisy across a stream to pollinate an orange daisy is an example of gene flow

Answer: Pollen from a yellow daisy travels across a stream and pollinates an orange daisy.

Explanation:

The gene flow can be define as the transfer of the genetic variation typically from one population to the other. If the rate of flow of gene is high enough, the two population in which the gene flow has occurred will become equivalent in allele frequencies and therefore will become the single population.  

Pollen from a yellow daisy travels across a stream and pollinates an orange daisy. is the correct option, this is because of the fact that through pollen which is the male gamete the genetic variations are passing from one population to another population of the same species of daisy. Thus the allelic frequencies will become the equivalent in the two populations of the same species. Thus this will result in the formation of the single population.