Answer:
Echinoderms play numerous ecological roles. Sand dollars and sea cucumbers burrow into the sand, providing more oxygen at greater depths of the sea floor. This allows more organisms to live there.
Explanation:
They are also economically important to humans due to their use in scientific research and education and also for food.
Answer:
The urinary system or the Renal systems regulates or takes out waste from the blood, maintain blood pressure, and controls the ion exchange process.
The parts of urinary system includes:
- Kidneys
- Ureters
- Bladder
- Urethera
Formation of urine :
When the blood passes through the kidney, it filters the blood. This is a 3 step process:
1) Glomerus filtration: This is the place where formation of urine starts. In glomerus, the water and solute from tiny capillaries and enter the capsule of the glomerus.
2) The tubular re-absorption: Most of the water and solute gets reabsorbed through this part
3) Tubular secretion: Extracellular fluid molecules get transferred into the nephron, these secretions get discarded out of the body containing mainly creatinine, urea, uric acid, K+ and H+ ions
NEPHRON :
The simplest unit of kidney and its the basic unit that filter the blood. One kidney has approximately 1. 5 million nephrons!
<span>Different body conditions react to different medications in so many different ways. All similar patients do not have the same reactions to same medicine. For some it do not bring any change in the condition and for some it may give some extreme side effects. So it is necessary for a follow up with the physician for Melissa because he can gauge the effect of medicine to her problem and suggest something that needs to done in addition.</span>
They have to adapt this would be like a bird with a long thin beak who used to eat just small seeds would have to change,say ..because the seeds were sparse that year...and had to start eating bigger seeds each year they have to do this the offspring would slowly adapt and change so they don't go extinct.
Answer:
Areas of savanna are turning into desert.
Explanation: