<span>The oesophagus is the muscular tube in humans and most other vertebrate organisms that carries food from the pharynx, or throat, down to the stomach. It is lined with a thick, moist pink tissue called mucosa.</span>
D. Lack of sunlight
Explanation:
In a forest, an example of a limiting factor is that lack of sunlight.
Limiting factors in an ecosystems are the that factors usually made up of environment resources that affects the growth and abundance of organisms in an ecosystem.
- Examples are sunlight, water, nutrient, air etc
- In a forest, sunlight is one of the limiting factors.
- Forest vegetation are stratified.
- The broad leaved canopy trees dominates and receives the bulk of the sunlight.
- The undergrowth beneath competes for the little sunlight that reaches below for their own use.
- Distributions of sunlight in an ecosystem affects the way in which vegetation are dispersed.
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The answer would be glucose which is sugar.
so answer B)Sugar
The answer is a microscope
Answer:
The fork is drawn to emphasize its similarity to the bacterial replication fork depicted in Figure. Although both forks use the same basic components, the mammalian fork differs in at least two important respects.
First, it uses two different DNA polymerases on the lagging strand.
Second, the mammalian DNA primase is a subunit of one of the lagging-strand DNA polymerases, DNA polymerase α, while that of bacteria is associated with a DNA helicase in the primosome. The polymerase α (with its associated primase) begins chains with RNA, extends them with DNA, and then hands the chains over to the second polymerase (δ), which elongates them. It is not known why eucaryotic DNA replication requires two different polymerases on the lagging strand. The major mammalian DNA helicase seems to be based on a ring formed from six different Mcm proteins; this ring may move along the leading strand, rather than along the lagging-strand template shown here.
Reference: Molecular Biology of the Cell. 4th edition. Alberts B, Johnson A, Lewis J, et al. New York: Garland Science; 2002.