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Sedbober [7]
4 years ago
12

What must happen before la a chemical reaction can begin

Biology
1 answer:
stiks02 [169]4 years ago
4 0
You need some kind of metric that captures the effect of a reaction on the entropy of the universe, including both the reaction system and its surroundings. Conveniently, both of these factors are rolled into one convenient value 
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The single most important feature to consider when purchasing a scuba regulator is: How well it performs in controlled laborator
serg [7]

Answer:

A diving regulator is a pressure regulator that reduces the pressure of gas in the tank and deliver it to the diver so that he/she can breathe easily. It must pass the controlled laboratory testing and must have a second adjustment knob to ensure ease of breathing. Modern regulators are precision made and designed to work under demanding conditions. 1st stage and 2nd stage, diaphragm and piston, exhaust valve and purge button are types of diving regulators.

8 0
3 years ago
1. The plant life that is characteristic of a biome depends upon:
eimsori [14]

Answer:

D. all of the above​

Explanation:

Biome refers to a large and relatively distinct terrestrial region having similar climatic conditions regardless of where it occurs on Earth. The characteristic climatic conditions (temperature and precipitation being the most important ones) and soil type of each biome type determine the type of plant species found there. Therefore, each biome is characterized by specific flora.  

For example, a desert biome is a temperate or tropical biome characterized by a lack of precipitation, seasonal variations in temperature and poor soil type with low organic matter that limits plant growth. Desert biomes have only the plant species that can survive these harsh conditions.  

5 0
3 years ago
the graph demonstrates the quantitative variation for skin pigmentation. which conclusion is supported by the graph? a)more than
BartSMP [9]

Answer : Option D) Fewer people have skin pigmentation lighter than the central peak than people who have pigmentation darker than the central peak.

Explanation : The quantitative variation which is shown for the skin is best explained by option D. Which shows that fewer people have got skin pigmentation which is lighter than the central peak in the graph, compared to the people who have darker pigmentation than the central peak.

4 0
3 years ago
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Which of the following is a requirement for a population to be in Hardy-
Norma-Jean [14]

Answer:

A. the population must be very large

4 0
2 years ago
Need help with 34 ASAP!!
Deffense [45]

Answer:

A.

Explanation:

It is A because the diagram for choice A shows correctly how cellular respiration produces energy and releases carbon dioxide and water as byproducts(CO2). And it also shows how photosynthesis release or produces oxygen gas (O2)

3 0
3 years ago
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