Answer:
When burned, coal produces pollutants that are released into the air.
Explanation:
This is the only negative implication and the question mentions a 'cost' which implies a negative connotation or tradeoff when coal is used a energy source.
Answer:
B) sugars; leaf; apical meristem
Explanation:
Phloem is one of the vascular tissues and is mainly involved in the transport of sugars. Phloem sap is the aqueous solution that moves through sieve tubes of phloem. Phloem sap mainly consists of sugars but also carries amino acids, hormones, and minerals. Sucrose is the most prevalent sugar.
Phloem sap moves from sites of sugar production (called sugar sources) to sites of sugar use or storage (called sugar sinks). A sugar sink is an organ that either uses the sugars for energy production and other functions or stores it.
In late spring, the fully grown leaves serve as a source of sugars. Apical meristem is responsible for the growth of stem and root length and serves as a sugar source as it obtains sugars from the leaves and uses them during the growth of shoot and roots.
To identify people by DNA it is better to make copies of non-coding segments because they exhibit more variation than genes.
- The polymorphic sequences of non-coding DNA vary between individuals in humans.
- Variable number tandem repeats, or VNTRs, are created when DNA sequences are repeatedly replicated in the genome's non-coding regions.
- It is possible to create a person's genetic fingerprint by counting the amount of repeats, which varies between individuals.
- However, this non-coding DNA is used in criminal investigations by forensic experts.
- There are distinctive repeating patterns found inside this area of DNA that can be utilized to distinguish one person from another.
- Short tandem repeats (STRs) are a type of pattern that can be measured to determine a person's DNA profile.
learn more about DNA here: brainly.com/question/21265857
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Stanley Miller and Harold Urey conducted an experiment, simulating the atmosphere as it was before, to explain how compuds would form in those atmospheric conditions (the atmosphere changes over time).
The hypothesis was used as a way of demostrating the origin of life, since in this experiment, organic materials were formed from inorganic materials.
To get the results, they simulated the earth's eraly atmosphere with different gases (the ones found in the atmosphere millions of years ago), water (simulating the ocean) and electrodes (simulating lightnings).
Hope it helped,
BioTeacher101
