The symbiotic relationship between a flower and the insect that feeds on its nectar is an example ofa. mutualism because the flower provides the insect with food and the insect pollinates the flower.
b. parasitism because the insect lives off the nectar from the flower.
c. commensalism because the insect does not harm the flower and the flower does not benefit from the relationship.
d. predation because the insect feeds on the flower.

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Answer:

Desert, Tundra, Grassland.

Explanation:

Which biomes receive less than 100 cm of rain each year? Check all that apply. tropical rain forest temperate rain forest desert tundra grassland

Desert, Tundra, Grassland are the right answers

Tundra receives Less than 25 cm rainfall/ year.  Average temperature is -12C

Desert receives less than 25 cm rain/ year. the average temperature is between   20-25 degrees C. in some desert, high temperature is experienced.

Grass receives 25-75cm of rain/year. The temperature 38 deg C to -40 deg C

Answer:

The main pigment responsible for the yellow color of urine and the brown color of feces is called urobilin.

Explanation:

Here's how it works:

1. When red blood cells break down in the body, a molecule called bilirubin is produced. Bilirubin is a yellow pigment.

2. Bilirubin is transported to the liver, where it undergoes further processing.

3. In the liver, bilirubin is conjugated with glucuronic acid, forming a water-soluble compound called bilirubin glucuronide.

4. Bilirubin glucuronide is then secreted into the bile, a digestive fluid produced by the liver.

5. The bile flows into the small intestine, where it aids in the digestion and absorption of fats.

6. In the intestine, bilirubin glucuronide is broken down by bacteria into urobilinogen.

7. Some urobilinogen is reabsorbed into the bloodstream and eventually excreted by the kidneys, giving urine its yellow color.

8. The remaining urobilinogen is further processed by bacteria in the colon, resulting in the formation of urobilin. Urobilin gives feces its brown color.

It's important to note that factors such as hydration levels and certain medications can influence the color of urine. In some cases, a darker yellow color may indicate dehydration, while lighter or clear urine may indicate excessive hydration.

Similarly, changes in diet, certain medications, and underlying health conditions can affect the color of feces. If you notice any significant changes in the color of your urine or feces, it's always a good idea to consult a healthcare professional for further evaluation.

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