Answer: Your upper and lower arms are connected at your elbow by a hinge joint between your humerus and ulna.
Explanation:
Answer:
A). Dividing the number of organisms in a region by the land area.
Explanation:
The formula for calculating population density PLUS example:
Answer: The below are following hazards of four-legged animals and fish.
Explanation:
The four legged animals like cats, dogs, horse, and others need proper shelter, food, and care to survive.
They need to be taken outdoors for excretion, and walk.
The mating period is not fix and not easily done.
The four like fishes like turtle and squid are difficult to be handled in aquarium.
The four legged fishes do not come in fishing net during aquarium cleaning.
There are chances of being biten by four legged animals and their associated diseases like rabies.
These animals can lick the food we eat and contaminate the food.
The animal feces may produce air pollution.
The animal noise like dog bark can cause noise pollution. Thus can lead to problem of hypertension.
Each human has 20 sets of joints, cartilage, ligaments, and bursae.
Abiotic
Abiotic
Abiotic
Biotic
Biotic
Biotic
