Answer:
15. Current increases
16. 4 Amp
17. Current decreases
18. A direct relationship
19. voltage affects current
20. Current is unchanged
Explanation:
First you need to know about Ohm's Law. Ohm's law can be summarized in the formula:

where:
V = Voltage
I = Current
R = Resistance
As you can see, when you increase the voltage, the current increases as well. When you decrease the resistance, current increases as well. This means that voltage has a direct relationship with current, and current has an indirect relationship with resistance.
Voltage is the potential, or electrical potential energy that pushes the current along a circuit. THe current is the flow of energy, so it is actually the rate of electrical energy that goes through a point in a circuit over a period of time. The resistance is the resistive force, that the current goes through as it goes through a circuit.
Let's apply that to question 16:

Our given:
V = 6V
R = 1.5Ω

In question 17,just to show you, we can solve it and compare:
<u>6 V battery and 3Ω resistance:</u>

<u>3 V battery and 3Ω resistance:</u>

Current decreases from 2A to 1A.
Let's try it on Question 20:
<u>12V and 5Ω</u>

<u>6V and 2.5Ω</u>

There is no difference.
Mites and ticks are the closest relatives of the spider because they all belong to the family of A<span>rachnids or joint-legged animals (eight legs), spiders being the largest order in the class. Mites and ticks also belong to this class. The three are closest relatives since, unlike other insects which belong to the same class, they all breathe using spiracles. </span>
Answer:
Sherlock Holmes and Dr. Roylott only meet in person one time. Dr. Watson is present and describes the meeting. Roylott bursts into Holmes' sitting room and tries to interrogate and intimidate the detective
The lymph is moved through the body in its own vessels making a one-way journey from the interstitial spaces to the subclavian veins at the base of the neck