How does the nervous system affect the excretory system? A the kidneys are controlled by signals from the brain
B the excretory system removes waste from nerve cell
C action potentials remove waste from blood
D nerves connect the kidneys to the bladder

i would have a lunch. it's one big package of food, making it one food. : p

2%? i tried finding the exact sorry if it's not 100% correct ; -;

which

what is a measurement of the earth’s history divided into time periods?

> fossil record <

sedimentary rock

> geologic time scale <

radioactive elements

not necessarily. higher fitness requires the organism to be reproductive successful. for example, an organism at age 10 with 15 offspring is much more fit than an organism at age 15 with only 5 offspring.