Answer:
the process by which green plants use sunlight water and nutrients to make food witb the help of chlorophyll is called photosynthesis
in Earth's early conditions?
Answer:
Earth’s primitive atmosphere allowed for more of the Sun’s rays to reach the bacteria. In addition, the oceans and atmosphere were richer in carbon dioxide than they are today. Both of these factors helped green bacteria survive in Earth’s early conditions.
Explanation:
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Explanation:
The early atmosphere was mainly made of carbon dioxide and methane.
These early bacteria were able to harness the energy of the sun to make their own food by reducing carbon dioxide into glucose. Due to the abundance of carbon dioxide and sunlight, these organisms were able to thrive, unlike heterotrophs bacteria that depended on other organisms for food.
Photosynthetic bacteria were able to thrive so well that their abundance caused a change in the composition of the atmosphere in what is referred to as the Great Oxygenation Event. They evolved oxygen during photosynthesis hence causing the significant composition of oxygen in the air today.
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For more on the Great Oxygenation Event check out;
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Answer : The electrocardiogram records the electrical signals of heart.
Explanation :
Electrocardiogram : It is a type graph that records the electrical signals or rate of the heart. It is also called ECGs.
It is a common test that is used to detect the problems in heart and also monitor the status of the heart in many conditions.
During the ECG, sensors (electrodes) that can detect the electrical activity of the heart are attached to the chest.
Hence, the type of data recorded by the electrocardiogram is the electrical signals of heart.
An electrocardiogram records the electrical activity of the heart.
Answer:
In essence, Newton's first law of motion states that an object at rest won't move unless an outside force causes it to move. Similarly, an object moving at a constant speed will continue moving at that same speed indefinitely, unless an outside force causes it to change speed.
Explanation:
O B. It's unaffected by changes in altitude,
O C. It increases
OD. It changes based on the time of year.
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Answer: A: Decreases
Explanation: The pressure is the ratio of the weight of the air to unit area. So, as the height increases, the pressure decreases.