Decomposition- the break down of dead organisms.
The gradient of streams tends to be steeper in their upper reaches and gentler in their lower reaches<span>.</span>
Explanation:
1) Chromosomal Abnormality is an extra chromosome at 18
Gender is Male because chromosome 23 has one X chromosome and one Y chromosome.
Disorder name is Edwards Syndrome
2) Chromosomal Abnormality is an extra chromosome at 21
Gender is Female because chromosome 23 has two X chromosomes
Disorder name is Down Syndrome
PH- extremes denature/ change enzyme shape, so they rate decreases
temp –extreme heat denature/ change enzyme shape, so they rate decreases substrate concentration- as substrate levels decrease, enzyme activity decreases
