When Sam was born, stimulation in his brain resulted in a massive overabundance of synapses. Neurons that were seldom stimulated soon lost their synapses, in a process known as a. neuroimaging b. myelination c. synaptic pruning d. neurotransmission Clear my choice

5.1 State the principle of conservation of mechanical energy in words. 5.2 Use your knowledge of the principle of conservation of mechanical energy to write down the value of the: 5.2.1 Gravitational potential energy of the ball at point \( B \). 5.2.2 Total mechanical energy at point \( C \). 5.3 Calculate the gravitational potential energy of the ball at point \( C \). 5.4 Determine by calculation whether the ball will reach point \( D \).

\( \begin{array}{r}\text { 1) } 7 \frac{8}{9} \\ \text { +9 } \\ \hline\end{array} \)

Which statement explains why 49 is a perfect square? 49 can be multiplied by 49 49 is equal to 7 plus 7 49 is between 36 and 64 49 is equal to 7 times 7

\( \int - \frac { 1 } { \sqrt { x ^ { 2 } + a ^ { 2 } } } d x \)

The best estimate of a child's physical maturity is a. weight b. chronological age c. skeletal age d. height Clear my choice