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trasher [3.6K]
2 years ago
9

What are the causes of substance abuse?

Biology
1 answer:
Semenov [28]2 years ago
5 0

Answer:

A person's genes, the action of the drug, peer pressure, emotional distress, anxiety, depression, and environmental stress can all be factors.

Explanation:

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Using the following pieces of information, what is the rate of population increase?
Rudik [331]

Answer:

850

Explanation:

rate of population increase = birthrate - death rate + immigration - emigration

= 1400 - 600 + 100 - 50 = 850

6 0
2 years ago
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This forms after fertilization and is made up of a plant embryo.
Daniel [21]
That is answer is A
8 0
1 year ago
What is the process of the cellular division that separates homologous chromosomes from one another?
nataly862011 [7]
For meiosis, this is in anaphase I. For the separation of sister CHROMATIDS in mitosis, this is anaphase. Either way, the separation of two whole chromosomes or two chromatids within one whole chromosome takes place during anaphase. This occurs after metaphase and before telophase and cytokinesis.
6 0
2 years ago
What species is/are formed at the anode of the alkaline fuel cell?
umka21 [38]

Fuel cells can make an electricity from a simple electrochemical reaction in which oxygen and hydrogen combine to form water. There are several different types of fuel cell but they are all based around a central design which consists of two electrodes, a negative anode and a positive cathode. These are separated by a solid or liquid electrolyte that carries electrically charged particles between the two electrodes. A catalyst, such as platinum, is often used to speed up the reactions at the electrodes. Fuel cells are classified according to the nature of the electrolyte. Every type needs particular materials and fuels and is suitable for any applications. The article below uses the proton exchange membrane fuel cell to illustrate the science and technology behind the fuel cell concept but the characteristics and applications of the other main designs are also discussed.  Proton Exchange Membrane Fuel Cells (PEMFC)

The hydrogen ions permeate across the electrolyte to the cathode, while the electrons flow through an external circuit and provide power. Oxygen, in the form of air, is supplied to the cathode and this combines with the electrons and the hydrogen ions to produce water. These reactions at the electrodes are as follows:

Anode: 2H24H+ + 4e-

Cathode: O2 + 4H+ + 4e- 2H2O

Overall: 2H2 + O22H2O + energy

PEM cells operate at a temperature of around 80°C. At this low temperature the electrochemical reactions would normally occur very slowly so they are catalysed by a thin layer of platinum on each electrode.

3 0
3 years ago
The maximum force of static friction between the crate and the floor is 245
NeTakaya

Answer:

A: 250 N to the right

Explanation

got it right on a quiz apx learning

8 0
2 years ago
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