Is mass conserved when 50 g of sugar undergoes a physical change? Use complete sentences to support your answer by explaining how this can be demonstrated.

Which of the following diseases may be transmitted through an accidental needle stick? a. syphilis b. tuberculosis c. cellulitis d. hepatitis b

Match the type of adaptation to the correct example, structural adaptation functional adaptation behavioral adaptation example type of adaptation elephants live in herds to protect their young leaves of a rain forest plant species have a pointed tip that enables rainwater to drain off easily. camels have nostrils that they can close snakes produce venom to kill prey and defend themselves. earthworms coil when touched, as part of a defense mechanism. human skin darkens with increased exposure to sunlight.

The phylogenetic tree illustrates the relationship between humans and our closest living relatives. the tree was based on biochemical comparisons, including dna and amino acid sequences. according to the biomolecular data, we could infer that