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Monica [59]
2 years ago
13

Toxic substances are also classified by how people are exposed to them. By definition, people may be exposed intentionally, acci

dentally, or deliberately.
True or False
Biology
1 answer:
Natali [406]2 years ago
3 0

Answer:

The statement is true.

Explanation:

When a chemical substance is dangerous for people's health, we speak of a toxic risk. This risk can materialize if exposure to the chemical agent is not controlled. Toxic substances are those substances capable of causing harmful effects in a living organism when they come into contact with it or when ingested,  intentionally, accidentally, or deliberately. The toxic risk of a chemical product depends on two factors: the toxicity and the absorbed dose, where a series of factors influence: composition, properties, concentration, duration of exposure, route of entry into the organism and workload.

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Answer:

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Explanation:

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In an earthworm is the dorsal blood vessel or the ventral blood vessel larger?
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Dna sequencing suggests that among the green algae, the __________ are most closely related to land plants.
makkiz [27]

DNA sequencing suggests that among the green algae, the Stonewort are most closely related to land plants.

<h3>What is DNA Sequencing ?</h3>

DNA Sequencing is a technique to determine the bases, nucleic acid sequence in the DNA. It is important to know the functions of genes, coding and non-coding part of proteins, identify the diseases, effectiveness of drug delivery etc.

<h3>What is Land plants and Stonewort ?</h3>

Stonewort is commonly known as Chara . It is a freshwater green algae which comes from the Charophyta division. Fossils of Charophytes shows that Stonewort is a type of algae which is 470 million years old.

Thus from the above conclusion we can say that DNA sequencing suggests that among the green algae, the Stonewort are most closely related to land plants.

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5 0
1 year ago
How does natural selection lead to evolution?
maw [93]

<u>Answer</u>:

Option d. many small changes can create a whole new species

<u>Explanation</u>:

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3 years ago
When a oligopoly exists, how many producers dominate the market
balandron [24]
In an oligopoly type of market, there are only few producers whom dominate the market. This is the market type wherein there are only small number of firms that control the majority of the market share. The opposite to Perfect Competition, wherein there are unlimited number of producers. In an oligopoly, since there are only a few numbers competitors, each firm is likely to be aware of each other's action.
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3 years ago
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