Answer:
The first line of defence (or outside defence system) includes physical and chemical barriers that are always ready and prepared to defend the body from infection. These include your skin, tears, mucus, cilia, stomach acid, urine flow, 'friendly' bacteria and white blood cells called neutrophils.
Explanation:
The sunlight provides energy for the plants to grow. <span>Since it is a closed system, no water would be lost, so it is not necessary to add extra water. </span>
Answer:
A. anther
B. receptacle
C. sepal
D. petal
F. filament
H.
J.
K. pollen tube
L.Ovary
O. Ovule
P. Style
* I'm confused with H and J
<span>Anaerobic </span><span>respiration that does not require oxygen
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