Answer: The x-axis has mother bird and the y-axis has chicks
Explanation:
The researchers studying the relationship between the number of eggs which is laid by the birds and the number of chicks which is surviving at the end of the year.
The researchers will make a graph between these two factors. One is eggs laid and the number of chicks that survived till the year last.
This will help to known of the proportion of the chicks which survived on an average.
Carbon monoxide is the most common type of poisoning by gases
Explanation: Survivorship curves fit three types. A Type I curve shows a low death rate in early and middle life but the death rate increases steeply in old age. A Type II curve shows a death rate is more constant throughout the lifetime of the species.