Maria works exclusively inputting data into medical records. She seldom takes a break from inputting and works 4 days per week, 10 hours each day. While driving, she noticed a change in her distance vision. Which of the following should she do to help ease eye strain while working? a. Place her hands and wrists in horizontal alignment b. Regularly focus on a distant object c. Place source documents flat beside her computer d. Frequently rotate her neck and shoulders

by drinking easy

very easy

answer : haversian

[explanation: -(compact bone is organized as parallel columns, known as haversian systems, which run lengthwise down the axis of long bones. these columns are composed of lamellae, concentric rings of bone, surrounding a central channel, or haversian canal, that contains the nerves, blood vessels, and lymphatic system of the bone)]

the answer is :

he forelimbs below belong to four species that descended in a direct line from the ancestral mammal shown above. of the four descendants shown, which species most likely appeared earliest in evolutionary history?