A census is often done every 10 years.
The answer to your question is b
Answer:
<u>establishing farming communities near oases</u>
Explanation:
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Answer:
mean of all 30 students is 69
Explanation:
given data
students = 30
mean = 29
μ = 68 points
student scored = 98 points
to find out
What is the mean for the class of all 30 students
solution
we know here mean score of 29 students is 68
so sum of score is here = 29 × 68
sum of score = 1972
so
sum of 30 students score is = sum of 29 students score + missing score
sum of 30 students score is = 1972 + 98
sum of 30 students score is = 2070
so
mean of all 30 students is = 
mean of all 30 students is = 
mean of all 30 students is 69
Spores is the answer gametophytes don't exist and sori is out of context also if you search spore on google it gives you this exact definition