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Darina [25.2K]
3 years ago
12

What is a pioneer species?

Biology
1 answer:
ELEN [110]3 years ago
6 0

Primera especie en colonizar lugares que estaban sin habitar

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Imagery and cognitions would not be possible without the functioning of the _______ system.
Lena [83]

Answer:

is the asnwer nervous and behavioral

if not then report me

Explanation:

8 0
3 years ago
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For a certain insecticide, the LD-50 dosage level for rats is determined to be 250 milligrams per kilogram of body mass. On the
Ivahew [28]

Answer:

Five hundred out of every one thousand rats would die

Explanation:

Median lethal dose LD-50 (lethal dose 50%) is used as a measure of poisoning potential of a substance. LD-50 is the dose of substance, given all at once, which causes the death of 50% (one half) of a group of test animals.  LD-50 is usually expressed as the amount of chemical administered (e.g., milligrams) per 100 grams or per kilogram of the body weight of the test animal. In this example, the test animals were rats, they were administrated a certain insecticide. Administration methods that are the most common are dermal (applied to the skin) and oral (given by mouth). If the determined LD-50 is 250 milligrams per kilogram of body mass, it means that one half (five hundred) of one thousand rats would die, because we are talking about lethal doses.

7 0
3 years ago
Changes that make a species better able to live in new areas are?
Dima020 [189]
Changes that make a species better able to live in new areas are adaptations. This is a trait with a current functional role in the life of an organism that is maintained and evolved by means of natural selection. Hope this answers the question. Have a nice day.
7 0
3 years ago
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Two primary techniques to identify use cases are _______ and _______. (choose two)​
PolarNik [594]
Two primary techniques to identify use cases are USER GOAL TECHNIQUE AND EVENT DECOMPOSITION.
Use case refers to an activity which a system perform as a result of the request input by a user. 
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 The event decomposition is used to determine the event to which the system must respond.<span />
5 0
3 years ago
How important do you think technology is to agriculture? Why is it important that the agriculture industry stay current and evol
sashaice [31]

Answer with Explanation:

<em>Here's an example answer with 5 sentences.</em>

Technology is very important to agriculture. It allows a higher crop yield and <u><em>lowers the quantity of water, fertilizer and pesticides being used.</em></u> The agriculture industry should stay current and evolve with technology in order to ensure a<em> more efficient way of farming</em> with lesser impact on the environment. This also ensures a safer growing condition for animals and plants, thereby affecting the<u><em> quality of food that people eat.</em></u> This makes agricultural businesses more profitable while maintaining an<em> eco-friendly society.</em>

4 0
3 years ago
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