Kinsey noted that some infants display behaviors that resemble orgasm. In infant boys, muscular contraction may be the same as in men but lack .

lack ejaculation

Explanation: this is due to the fact that the sexual characteristics of an infant is underdeveloped. As the infant grows and reach adulthood, the body becomes able to produce sperm and also enables ejaculation to occur.

the speed increase from w to x due to increased gravity force

the speed decreases from x to y due to decrease in gravity

the answer is admiramos

the rule for verbs is whoever you are referring to (in this case 'nosotros'), you need to change the ending of the word.

nosotros - amos

yo - o

tu - as

el, ella, usted - a

ellos, ellas, ustedes - an

(examples: nosotros bailamos (instead of bailar) or yo hablo (instead of habla)