Yes that is the correct answer choice
The hero changes from being happy to depressed or unhappy
Answer:
option A
Explanation:
correct answer is option A
the true statement. is Natural selection works on variation already present in the population
the process of Adaptation of organism according to the environment and other natural reasons which tends to survive and produce offspring is called as Natural selection.
Natural selection theory of its action was given Charles Darwin.
hence, the correct option comes out to be option A
Answer:
The correct answer is 2/3.
Explanation:
In the given question, alpha (α) is the competition coefficient, and a differential calculus logistic equation is used in order to solve the question.
dN/dT = rN1 (K - N1 - αN2) / K
Here, alpha is the competition coefficient
K is the carrying capacity, and N is the population size.
Now, setting dN/dT = 0 we get,
= rN1 (K - N1 - αN2) / K = 0
= 0.2 × 20000 (40000 - 20000 - α30000) / 40000 = 0
= 20000 - 30000α / 10000 = 0
= 30000α = 20000
= α = 20000 / 30000
= α = 2/3