The four basic neccessities in emergency period are;
- Food
- Water
- Shealter
- Clothing
<h3>What is an emergency?</h3>
The term emergency refers to any period in which there is scarcity of basic resources such as during war.
In such times there are four basic neccessities that one must think about and they are;
- Food
- Water
- Shealter
- Clothing
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I think it should be D. A loss in biodiversity due to catastrophic event.
Answer:
with each heartbeat,the heart pumps blood throughout our bodies,carrying oxygen to every cell,after delivering oxygen the blood returns to the heart the heart then sends the blood to the lungs to pick up more oxygen.
Answer:
Kidneys : helps in forming urine
Ureter : They are connected to kidney and by peristaltic action transports urine from kidneys to bladder .
Urinary bladder : It is an hollow sac that holds the urine .
Urethra : transports urine from the bladder to outside of the body .
Explanation:
The human excretory system consists of : Kidney ,ureter ,urinary bladder and urethra .The figure is shown below .
Now , as far as functions are concerned we have :
Kidneys : They have excretory units called nephrons that further consist of :
- Bowman's capsule
- PCT (Proximal convoluted tubule )
- DCT (Distal convoluted tubule)
- CT (collecting tubule )
In nephrons urine is formed and via ureter it is transported to a hollow sac like structure called urinary bladder .
This bladder has muscles that cant remain contracted up to longer period )and then voluntary and involuntary it is excreted through urethra .
The process of passing urine is called Micturition .
Veins carry blood from the body to the heart.
Arteries carry blood from the heart to the body.
Your answer is: arteries
Hope that helped:)