The primary organs of excretion are the

A. heart and lungs.

B. lungs and kidneys.

C. kidneys and liver.

D. liver and pancreas.

Assume sexual reproduction occurs. What is the number of chromosomes in the zygote if the parent's reproductive cells or gametes contain 12 chromosomes each A) 6 B) 24 C) 48

Which gas causes an increase in the temperature in the stratosphere

Where does most of the oxygen in the atmosphere come from? A. the process of evolution B. the process of photosynthesis C. the process of respiration D. the process of cellular respiration

A cross between a male horse and female donkey results in reproduction of a mule, which does not resemble either oft he parents. What is the reason for this

Aldosterone is the most potent mineralocorticoid produced in the adrenal cortex and is produced when there is rise in blood potassium and BP. True / False.

Which polymers provide plants with their genetic traits? A). Proteins B). Lipids C). Nucleic Acid D). Starches I attempted question once, so answer is not lipids.

Which country has the most species of butterflies

Which characteristic makes fungi similar to plants? Both fungi and plants are autotrophic organisms. Both fungi and plants have vascular tissue. Both fungi and plants have cell walls of chitin. Both fungi and plants can grow in soil.

How do plants atrract flies or possums for pollination

Suppose a bolt of lightning starts a fire in a forest. The fire sweeps through the forest and burns away accumulations of brush and deadwood. What is the most likely effect of the fire on the forest community?