Which three factors limit descriptive and comparative investigations? O A. The way you must write hypotheses B. The number of variables you can have I C. The number of observations you can make D. The features of objects that you cannot see E. The amount of time or money required.

this would be a math

this is true, assuming that the allele is completely recessive and incomplete dominance is not a factor.

brain development. a child's brain undergoes an amazing period of development from birth to three—producing more than a million neural connections each second. the development of the brain is influenced by many factors, including a child's relationships, experiences and environment.

explanation: