D. chlorophyll is the main source of light in photosynthesis
Answer:
Perhaps try adding a conflict? If a story's all happy-go-lucky, it won't draw the reader's interest. For example,
- Sabotage by a so-called friend
- Becoming I'll
- Group Project
- Being given an assignment that you're scared to do (for example, public speaking.
Answer:
Autonomic regulation of heart is via two reflex centers that are found in medulla oblongata
Explanation:
Medulla oblongata contain long stem that makes the upper part of brain case and this is a cone shaped structure which is responsible for autonomic regulation like controlling heart rate,vomiting,respiration,breathing etc.
The heart rate is controlled by autonomic nervous system that are mainly sympathetic and parasympathetic nervous system that releases hormones like catecholamine (epinephrine and non epinephrine) which helps in controlling the heart rate.
Medulla oblongata mainly connects the brain with the spinal cord that are responsible for responsible for the autonomic functions which contain -
Controlling the ventilation via signalling system regulated by chemo receptors which detects change in acidity of the blood.
Acts on cardiovascular centers.
Controlling the reflex centers like vomiting,coughing,sneezing,swallowing etc.
<u>W</u><u>h</u><u>y did the irish potato famine occur</u><u>:</u>
<em>~</em><em>b</em><em>e</em><em>c</em><em>a</em><em>u</em><em>s</em><em>e</em><em> </em><em>of</em><em> </em><em>a failure of the potato crop, which many people relied on for most of their nutrition. </em>
<em>~</em><em>A disease called late blight destroyed the leaves and edible roots of the potato plants in successive years </em>
<em>~</em><em>began in 1845</em>
<em>~</em><em>ended</em><em> </em><em>in</em><em> </em><em>18</em><em>4</em><em>9</em>
<em>~</em><em>Name</em><em> </em><em>of</em><em> </em><em>the</em><em> </em><em>disease</em><em>-</em><em> </em><em>fungus-like organism Phytophthora infestans (or P. infestans)</em>
Hope this helped you- have a good day bro cya)<em> </em>