in isotopes, atoms have different proton numbers, t/f?
false
Hibernation is a structural adaptation, T/F?
False
What did John Dalton do?
came up with the atomic theory
the male gamete in a flower is the?
pollen
once a seed is formed, the petals and anthers and stigma, wither away, t/F?
true
wind pollinated flowers have brighter, more colorful sweet smelling petals, T/F?
false
The famous gold foil experiment was conducted by?
Ernest rutherford
how did democritus contribute in the history of atoms?
suggested the word' atoms'
petrol burns in the car is the reaction endothermic/exothermic?
exothermic
to test for carbon dioxide, calcium carbonate is used, T/F?
false
In photosynthesis, carbon dioxide is a reactant, T/F?
True
why does a camels have bushy eyelashes
to prevent sand from entering the eyes
what physical feature in a polar bear prevents excessive loss of body heat?
thick coat, small ears etc
the flower part into which a pollen grows its pollen tube is?
style