"C. Ecosystem"
An ecosystem is described by the interaction between living organisms in a given area, interacting with others, and non-living aspects of the environment where they are in. By considering the living place of a woodchuck, what they eat, and where they feed, we are talking about an ecosystem.
Xylem and Phloem. They are both part of the vascular tissue. Xylem is responsible for the movement of water and minerals from the roots to the leaves for photosynthesis. Phloem transports the sugar made during photosynthesis from the leaves to different parts of the plant. I'm pretty sure that water is included when the sugar is transported (in phloem) but you should just check if water is transported after photosynthesis just to make sure
Answer:
crossing over, process in genetics by which the two chromosomes of a homologous pair exchange equal segments with each other. Crossing over occurs in the first division of meiosis . At that stage each chromosome has replicated into two strands called sister chromatids. The two homologous chromosomes of a pair synapse, or come together. While the chromosomes are synapsed, breaks occur at corresponding points in two of the non-sister chromatids, i.e., in one chromatid of each chromosome. Since the chromosomes are homologous, breaks at corresponding points mean that the segments that are broken off contain corresponding genes , i.e., alleles. The broken sections are then exchanged between the chromosomes to form complete new units, and each new recombined chromosome of the pair can go to a different daughter sex cell. Crossing over results in recombination of genes found on the same chromosome, called linked genes, that would otherwise always be transmitted together. Because the frequency of crossing over between any two linked genes is proportional to the chromosomal distance between them, crossing over frequencies are used to construct genetic, or linkage, maps of genes on chromosomes. Mutations , temperature changes, and radiation all affect crossing over frequency. Under the microscope, a crossover has the appearance of an X and is called a chiasma.
Explanation:
A food web demonstrates which organisms transfer energy to other organisms. It helps maintain the ecosystem because if one life form went extinct, it could destroy the whole web.
1. A polar molecule is like a magnet: the two ends are different and if you try to put two like ends together, they will repel. But, if you put two opposites together they will attract.
2. Water is capeable of dissolving many substances which is why it is a good solvent. Its known as a universal solvent because it dissolves the most of any liquid.
3. A buffer resists or tries to stop pH change to help maintain homeostasis.
4. Soda is usually considered a solution because it contains sugar, additives, and other sweetners dissolved.
5. Surface Tension (I think) because the water is so attracted to eachother that i can be hard to break the surface of water. Water drops, when water drips it does not break into individual water molecules due to cohesion (due to hydrogen bonds), and stays on the items its dripping down due to adhesion.
6. In colder temperatures, water freezes into ice which is less dense then water, causing it to float. This helps so all the water underneath doesnt freeze, allowing aquatic life to still live.
Hope this helps!
