If element X has 49 protons, how many electrons does it have?

When a driver mixes alcohol or other drugs together, it creates a?

Function Golgi apparatus

Water can leave the air as a result of which processes? A. infiltration or transpiration B. precipitation or evaporation C. evaporation or transpiration D. condensation or precipitation

Four liquids were poured on top of each other in a glass, and the liquids separated into four different layers. Which liquid had the highest density? A. the layer at the top of the glass B. the layer at the bottom of the glass C.

Which type of tissue is made of cells that contract and relax? A. nervous tissue B. epithelial tissue C. muscle tissue D. connective tissue

Which of these organisms would be a producer? A. fish B. grasshopper C. flower D. snake

A 75 year old man need a replacement heart valve. he lives alone and cares for himself. is a mechanical or biological heart more suited for him

Explain climate change in the past 100 years

1._Mentions eukaryotic cells 2._Mentions prokaryotic cells

What type of cell destroys dead bacteria killed by T and B cells