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3 years ago

You will measure and compare the heart rates of ten learners before and after

Biology

1 answer:

rewona [7]3 years ago

8 0

Answer:

Exercise is responsible for the increasing heart beat.

Explanation:

Exercise is responsible for the increasing heart beat because our body needs oxygen more faster during exercise. When we exercise our body needs quick energy and oxygen which can be provided by heart as well as the heart also removes carbondioxide which is produces during respiration process so the heart beat increases in order to provide energy and oxygen to the muscles.

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Since oxygen gas is being released, it can be inferred

almond37 [142]

Answer:

Option A

Explanation:

The answer is option A or "producing glucose." Glucose is a sugar that is a main component for all living organisms because it contains carbohydrates. When oxygen is being released from a plant it means that it's producing glucose which is released through the plants stomata.

Hope this helps.

3 0

3 years ago

Breathing involves the movement of diaphragm and Rib cage true or false

Elza [17]

Answer:

Explanation:

It's a true statement as,

When we inhale the diaphragm moves downwards and the rib cage moves upwards and outwards to let enter the outside air containing oxygen come in.
While we exhale the diaphragm comes to its position and the rib cage move downwards and inwards to let out the inside carbon-dioxide and other games out.

Hence, we can conclude that breathing involves the movement of diaphragm and Rib cage.

4 0

3 years ago

Which statement correctly describes a characteristic that a scientific

RideAnS [48]

Answer: Option A.

Explanation:

Scientific measuring tools refers to the equipments or tools use to measure quantities in science examples include measuring cup, measuring cylinder, e.t.c.

The characteristic that describe Scientific tool is that To be accurate, it must be able to make measurements repeatedly over a long period of time because accuracy is how close the measurements for a value is to the correct value and it must take measurements for long period of time without errors.

6 0

3 years ago

Read 2 more answers

Both the hair and skin contain keratin. When comparing the hair shaft to the skin which layer of the epidermis is most similar?

Paha777 [63]

Answer:straum and straum

Explanation:

they both have the same name

3 0

2 years ago

The sun shining on a tidal pool during a hot day heats the water, causing some water to evaporate. Because the water has become

Readme [11.4K]

Answer: The oxygen content of the water decreases

Explanation:

The sun shining on a tidal pool during a hot day heats the water, causing some water to evaporate. Because the water has become warmer and saltier, the oxygen content of the water decreases.

The temperature and the salt content of a body of water determines how much oxygen it can hold.

The oxygen content of warm water decreases because the temperature of the water causes the water molecules to move faster. This leads to the expulsion of oxygen from the water, making it contain less oxygen.

Also, salty water will lead to a decrease in oxygen because of the presence of sodium chloride ions.

Therefore, a warmer and saltier water will contain a less amount of oxygen.

3 0

3 years ago