Me with these questions

image attached

The probability of producing a normal child by two parents who are carriers for an autosomal recessive disorder is

Why do we perceive objects as retaining their brightness under different lighting levels?

Iwill make you brainliest pleeze answer this fast i have to turn it in really soon brainliest promise easy question 6th grade ! a weather map shows a high pressure system with circles around it. what does this mean? a) an occluded front b) areas of equal altitude c) areas of equal pressure d) a stationary front