ABOUT WHALES

Whales are the largest animals one earth they are mammals

What hunt for food using a variety of techniques and not all 

species of whale will hunt for or attack their prey in the same way. 

The way it works is as they their prey they send out a series of clicking and busing noises, these clicking and busing sounds bounce off of objects in the area (such as fish or other aquatic lifeforms) and return back to the whale indicating information such as how far objects are, what type of texture it is (hard or soft), and whether or not the object is moving or still.

Unlike most animals, whales are conscious breathers. All mammals sleep, but whales cannot afford to become unconscious for long because they may drown

Whaling is no longer the only threat to whales. The oceans, or rather, human impacts on the oceans, have changed dramatically over the half-century since whales have been protected.

Known environmental threats to whales include global warming, pollution, overfishing, ozone depletion, noise such as sonar weaponry, and ship strikes. Industrial fishing threatens the food supply of whales and also puts whales at risk of entanglement in fishing gear.

THE GERMINATION OF SEEDS

The aim is to illustrate that heat is liberated during respiration

The apparatus A and B

Take 2 thermometers, 2 thermos flasks, 2 rubber stoppers,2 beakers with seeds like beans or peas.

Take 2 beakers with seeds. To one of the beakers add water and allow the seeds soak for the whole night. On the next day morning take two wide mouthed thermos flasks which can be closed with a tight fitting cork. Put the germinating seeds into one of the thermosflasks and dry seeds in another thermos flask. Make a hole in the cork and insert a thermometer into cork and see the bulb of the thermometer is in the midst of the seeds. Record the temperature in both the flasks at every two or three hour intervals for about 24h.

In dry seeds, enzymes are inactive so respiration did not take place and no rise in temperature where as in germinating seeds enzymes are active and respiration has taken place with rise in temperature.

AFRICA TALLEST MOUNTAIN

Kilimanjaro it is 5895m in height it is situated in Tanzania, it has three volcanic cones  Kibo, Mawenzi, and Shira,Kilimanjaro, the highest mountain in Africa and fourth highest of the Seven Summits, is considered the tallest freestanding mountain in the world, rising 15,100 feet (4,600 meters) from base to summit.

Kilimanjaro is composed of three distinct volcanic cones: Kibo 19,340 feet (5,895 meters); Mawenzi 16,896 feet (5,149 meters); and Shira 13,000 feet (3,962 meters). Uhuru Peak is the highest summit on Kibo’s crater rim.

Kilimanjaro is a giant stratovolcano that began forming a million years ago when lava spilled from the Rift Valley zone. The mountain was built by successive lava flows. Two of its three peaks—Mawenzi and Shira—are extinct while Kibo, the highest peak is dormant and could erupt again.

According to the famous English geographer Halford Mackinder: "It was the missionary Rebmann of Mombasa who, in 1848, first reported the existence of Kilimanjaro.

WHAT IS THE FASTEST ANIMAL

Cheetah is the fastest with a maximum speed of 112–120 km/h, Cheetah is a large feline  
they follow under a family of Cats, they are mammals and they are Carnivore   

Before unleashing their speed, cheetahs use exceptionally keen eyesight to scan their grassland environment for signs of prey especially antelope and hares. This big cat is a daylight hunter that benefits from stealthy movement and a distinctive spotted coat that allows it to blend easily into high, dry grasses.

The cheetah has unusually low genetic variability. This is accompanied by a very low sperm count, motility, and deformed flagella. Skin grafts between unrelated cheetahs illustrate the former point, in that there is no rejection of the donor skin

The cheetah's chest is deep and its waist is narrow. The coarse, short fur of the cheetah is tan with round black spots measuring from 2 to 3 cm (0.79 to 1.2 in) across, 

WHY ARE PLANTS GREEN

Plants are green because they have a substance called chlorophyll in them. Chlorophyll absorbs wavelengths of light with wavelengths around 450nm and again around 650nm. In other words it absorbs reds and blues. The only light left to reflect off the plant and back to your eye is green. This is why plants appear green.

But since they appears green—bouncing back green and yellow light waves—it means it's not 100 percent efficient at absorbing all of the sun's rays.

Plants get their energy to grow through a process called photosynthesis.  Large numbers of chlorophyll molecules acts as the antenna that actually harvest sunlight and start to convert it in to a useful form. Is where the absorbent properties of the chlorophyll molecule come into play.