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sources of air pollutants are?
Nephron is the kidney's functional unit.
Mammals excrete urea.
The heart pumps blood.
Chlorophyll gives plants their green colour.
Mitochondria carry out respiration.
Blood circulation in a mammal is said to be double because?
If both parents are heterozygous for a trait. the probability that an offspring will be recessive for that trait is?
The mutation theory of organic evolution was propounded by?
The movement of part of a plant in response to external stimulus of no particular direction is?
The most abundant group of organisms in the animal kingdom?
The plants that grow in deserts or very dry areas are referred to as?
Which of the following is true in blood transfusion?
The sequence of the one-way gaseous exchange mechanism in a fish is?
I. Stomata --> Spirogyra
II. Alveoli --> Earthworm
III. Malpighian tubule -> Mammal
IV. Contractile vacuole -> Protozoa
Which of the above structures is correctly matched with the organisms in which it is found?
Mass of a crucible = 10g,
Mass of a crucible and soil before heating =29g
Mass of a crucible and soil after heating = 18g
From the information above, determine the percentage of water in the given soil sample?
The order of passage of food in the digestive system is
The correct sequence of the movement of urea during urine formation is?
Which of the following produces both hormones and enzymes?
I. Rattus rattus. Il. Agama agama III. Bufo regularis IV. Tilapia zillii
The order of evolutionary advancement of the above vertebrates is?