The best answer is b. 4
The human heart has four chambers - two atria and two ventricles.
1. Right atrium - receives oxygen-poor blood from the body and pumps it to the right ventricle.
2. Right ventricle - pumps oxygen-poor blood to the heart.
3. Left atrium - receive oxygen - rich blood from the lungs.
4. Left ventricle - pumps oxygen rich blood to the body.
The heart is a muscular organ. It is about the size of a closed fist. It is located in the thoracic cavity. It is protected by the rib cage and is the major organ of the circulatory system.
Answer:
if you find this helpful, Mark brainliest
Answer:
Yes, the statement is correct. Plants respire throughout the day, while photosynthesis takes place only in the presence of sunlight. ... At night, when there is no photosynthesis, no oxygen is released. Also, CO2 produced during respiration is not used by the plants.
Answer:
I think B)
Explanation:
What your asking isn't that clear but if you said 'producers' is a kind of plant that creates their own food and the process is called photosynthesis.
But at the same time your question says "this plant take in oxygen and release carbon dioxide during just like animals and other living things" Im not sure that plants are the ones to take in oxygen and release carbon dioxide so....
I'm sorry if this didn't answer your question.
Answer:
The ability to produce sweat to cool their bodies.
Explanation:
Evolution may be defined as the change in the the characteristics of the species with respect to time. The process of the natural selection plays an important role in evolution.
As the humans are living in hot and dry areas, this allow the change in their physiology and genes that help them to survive according to the environment. The humans produce more sweat. They have well developed sweat glands. These glands help in the production of sweat that ultimately causes cooling in their body.
