Answer: The correct answer is C. Vacuum.
Explanation: It was correct on my test : )
The stronger survived and the weaker passed on... Those with a weaker immune system had trouble with sickness and usually ended up passing on but those with strong immune systems were stronger and healthier and lived.
Answer:
an organism with nutritional requirements
Explanation:
Answer: C. cropping patterns
Explanation:
Cropping pattern can be defined as the area in which the different crops grow at different times of the year. It also consider the spatial arrangement and time used to grow a sequence of crops that are grown in a particular area of land.
The given situation is indicative of the cropping patterns as different crops are grown in the same land over particular period of the year.
