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Questions in biology

[Answered] Some animals, but not humans, have an organ called a gizzard located near the top of their digestive tract. This organ is small, can contain small rocks, and has thick, muscular walls. Based on this physical description, which of the following is most likely the function of this organ?

[Answered] Which of the following explains why the heart is organized so that it pumps blood to two different locations? a.to supply blood to two different sides of the body b.to allow a way for the blood to pick up new blood cells c.to move oxygen-poor blood through the lungs and to move oxygen-rich blood to the rest of the body d.to provide a way for blood to pick up nutrients at one location and oxygen at another

[Answered] Which set of terms below would be the best choice to use to describe the components of blood? 1. leukocytes, ventricle, atrium, aorta 2. platelets, plasma, erythrocytes, leukocytes 3. electrolytes, artery, vein, cardiac 4. antibodies, hemoglobin, pulmonary, systemic

[Answered] What kind of molecule is glucose? Glucose is a simple sugar made up of carbon, hydrogen, and oxygen.

[Answered] Which structure in the digestive system comes into direct contact with the circulatory system for the transfer of nutrients into the blood?

[Answered] Describe how ecologists use the technique of sampling to estimate population size.

[Answered] What causes a nebula to collapse?

[Answered] How does using coal to generate electricity affect the environment? A. Using more coal reduces the amount of pollution from using oil. B. Using coal improves the quality of nearby water. C. Using coal, instead of wood from trees, helps improve the environment. D. Using coal releases pollution into the atmosphere.

[Answered] Which of the following is an example of recycling a renewable resource? A. Riding a bike instead of driving a car B. Turning food scraps into compost for plants C. Turning off lights when you are not using them D. Washing plastic forks and using them again instead of throwing them away

[Answered] What is the two-word system for naming organisms called?