A kind of variable that a researcher purposely changes in an investigation is

Which muscle dorsiflexes your ankle toward the sky (dorsiflexion)?

Elanso [62]

Answer:

a. Tibialis anterior

Explanation: is correct

5 0

3 years ago

Which is the least number of seismograph stations needed to locate the epicenter of a earthquake

Hunter-Best [27]

At least three seismograph stations are needed to locate the epicenter of a earthquake.

Further Explanation:

An earthquake occurs when two region of the earth slip past each other. Fault plane is the area where the slip occurs. Hypocenter is the region below the earth’s surface where earthquake starts while the epicenter is the region above it.

The earth consists of four major layer:

1. Inner core

2. Outer core

3. Mantle

4. Crust

Seismographs is an instrument used to record the earthquake. The recording done by this instrument is called as the seismograms.

The seismograph comprises of:

1. A base: is fixed tightly in the ground

2. Heavy weight: hangs freely

When the earthquake occurs, the ground shakes and in turn the seismograph also shakes while the hanging weight does not shakes. During the earthquake, the difference in the location between the shaking piece and the motionless piece is recorded. Magnitude of the earthquake is recorded as one for each earthquake. The magnitude of earthquake is measured by the Richter scale but is more commonly measured through moment magnitude scale.

Learn more:

1. Learn more about earth brainly.com/question/5956881

2. Learn more about earth science brainly.com/question/1553517

3. Learn more about how sun energy reaches earth brainly.com/question/1140127

Answer Detail:

Grade: College biology

Subject: Biology

Chapter: Natural calamity

Keywords:

Seismograph stations, earthquake, fault plane, hypocenter, epicenter, inner core, outer core, mantle, crust, seismographs, instrument, seismograms, magnitude.

8 0

3 years ago

Read 2 more answers

What membranes lines the cavities and tubes in the digestive and respiratory system

Gwar [14]

Firstly they are not membranes and they are villi's which increase the surface area during digestion

7 0

4 years ago

Can anyone help me with these questions

lisov135 [29]

36. The amount of energy at each trophic level decreases as itmoves through an ecosystem. As little as 10 percent of theenergy at any trophic level is transferred to the next level; the rest is lost largely through metabolic processes as heat.
37. The amount of energy at each trophic level decreases as it moves through an ecosystem. As little as 10 percent of the energy at any trophic level is transferred to the next level; the rest is lost largely through metabolic processes as heat.
38. The amount of energy at each trophic level decreases as it moves through an ecosystem. As little as 10 percent of theenergy at any trophic level is transferred to the next level; the rest is lost largely through metabolic processes as heat.
39. idk

4 0

4 years ago

An enzyme is a biological carbohydrate based catalyst. true or false

castortr0y [4]

False. Although enzymes work as catalyst, they are not carbohydrates, they are proteins.

4 0

4 years ago