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Nutka1998 [239]
2 years ago
14

Help pls will mark brainlist ​

Biology
2 answers:
CaHeK987 [17]2 years ago
7 0

Answer: Its independent variable

Explanation: Bernard's experiment investigated the effect of the air pressure in the footballs. He decided how much air to put in each ball. The air pressure in the footballs did not depend on what happened in the experiment. So, the air pressure in the footballs was an independent variable in this experiment.

Airida [17]2 years ago
3 0

Answer:

independent variable

Explanation:

The air pressure of the football can stand on it's own, there isn't anything affecting it. instead, the air pressure is influencing the experiment. The dependant variable I'm this experiment would be the distance traveled.

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Explanation:

The community may enter primary succession.

Ecological communities are highly dynamic- they gradually evolve. Typically their progression involves:

  • colonizing species exploiting uninhabited areas (Primary succession)
  • becoming a habitable and increasingly complex community
  • there is increased diversity of organisms (Secondary)

The makeup of biological communities is crucial to defining Primary and Secondary succession; eventually, through changes in this makeup, a steady-state or equilibrium is reached called a climax community. While Primary succession starts off with the modification of a previously unoccupied area along with increasing variation; secondary succession begins after major disruption in the community such as fires, storms and flooding.

Like the harvested climax forest, secondary communities do not begin with the removal of soil and all biological life; other species, may be more suited to the altered conditions and begin to modify the area creating a new community.

However, the process of becoming a climax community can be pretty complicated- it is very dependent on other factors like temperature and rainfall. Communities that experience rapid change, frequent major disruptions and even human intervention, are less likely to attain a stable equilibrium and may never become climax communities.

Learn more about primary succession at brainly.com/question/1603854

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8 0
3 years ago
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alexandr1967 [171]

The shock-absorbing pads between the vertebrae are formed of fibrocartilage. TRUE

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5 0
3 years ago
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olchik [2.2K]

Answer:

The incorrect statement is that the neural reflex arc becomes slow by the hormones involved.

Explanation:

A neural pathway that controls a reflex is known as a reflex arc. In a reflex arc, the sensory neuron transmits a signal to the interneuron and stimulates it. The interneuron then transmits or passes the signal to the next neuron, that is, a motor neuron. The motor neuron associates with the interneurons in the spinal cord, which transmits messages from the CNS to the body. Thus, a reflex arc comprises the elements, that is, the receptor, integrating center, and the effector. Their main activity is to protect the body from external events.

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