Harmful&Beneficial Effect Of Animals Grade 4

Beneficial and Harmful Effects of Animals on

People

Prepared by:Lovelyn M. Mataac

Beneficial Effects•1. Animals are good source of FOOD.

2. People make use of animals to WORK.

Camel carry heavy loads, dogs help policemen detect bomb.

Bees pollinate fruit-bearing plants

3. Animals are source of materials that can be made into

useful things.

Pearl is a precious gem. Pearls form inside oysters.

They are made into rings, earrings and brooches.

Shells are used for making lamps, vases and window panes.

• Blubber

An insulating layer of fat under the skin of whales and other large marine mammals; used as a source of oil

gelatin• It is derived from collagen found in the bones,

cartilage, connective tissue, and skin of animals, traditionally cows. Most commercially produced gelatin nowadays is produced from pig skin. If you have ever roasted a chicken or ham, you made your own gelatin. The juices in the bottom of the pan contain gelatin rendered from the collagen, and if you put the roasting pan in the refrigerator, you'll find some of the juice setting into a gel.

Musk• Musk is the name originally given to a

substance with a penetrating odor obtained from a gland of the male musk deer, which is situated between its stomach and genitals. The substance has been used as a popular perfume fixative since ancient times and is one of the most expensive animal products in the world. The name, originated from Sanskrit muṣká meaning "testicle," has come to encompass a wide variety of substances with somewhat similar odors although many of them are quite different in their chemical structures.

Musk deer

As pets

As decomposers

Harmful Effects of Animals to people

• 1. Ailments and Diseases

• A. Itchiness and irritation– From bed bugs, lice and other parasites

Scabies-brought about by lice, mites, ticks

• 2. Some animals are also cause of diarrhea,

• like worms and flies.

3. Mosquitoes are carriers of germs called malaria.

• Plasmodium Falcifarum-a parasite

Anopheles Mosquito

Dengue comes from the bite of mosquito Aedes Aegypti

• Dengue is caused by FLAVIVIRUS

Rabies • This disease which is caused by a virus,

can cause the paralysis of the eye and facial muscles and then, death.

Leptospirosis• It is caused by bacteria in the urine of

rats.

Foot and Mouth Disease• From animals with cloven (divided)

hoofs. Ex. Pigs, cow, carabao• This virus can be transmitted to people.

Animals can cause Injuries

Animals also destroy plants and important documents

• Ex. Locusts destroys plants which people used as food.

• Silverfish eats clothes, books, and leather.

» Silverfish