Answer: excretion... could also be sensitivity
Explanation:
M ovement
R eproduction
S ensitivity
G rowth
R espiration
E xcretion (removal of waste such as by defacation or sweating)
N utrition
Answer:
c
Explanation:
due to low light illumination there would very low level of oxygen at the bottom of the sea therefore hindering the survival of these organisms
<span>The avian heart has evolved into a large and powerful organ with rapid muscular contractions. Generally the smaller the species the larger the relative heart size. Generally birds have hearts larger and ones that beat faster than mammals. The human heart weight amounts to .42 percent of body weight and the pulse rate at rest averages 72 beats per minute. The House Sparrow's heart constitutes 1.68 percent of the body weight and the pulse rate at rest averages 460 beats per minute. In the Ruby-throated Hummingbird these figures rise to 2.37 percent and a pulse rate of 615.</span>
The land or land uses takes quite a bit of abuse as the human population increases. The land takes in chemicals, and if over-cropped it can be drained of its nutrients (which is what lead to the Dust Bowl). The land's plants filter out some CO2 from the air from proudction but not as much as humans create. The land's water source changes from clean and fresh to usually more acidic or fertilized which either kills the fish or algee grows everywhere cutting off oxygen from both aquatic plants and animals.
The answer is C, farmer Martin.