12. the speed of racing car is 60m/s. what will this speed be in km/hr?

13. the graph below represents the journey of a steam train. the vertical axis represents the distance from the station in kilometers.
a. how far did the train travel in first 40 minutes?
b. work out the speed of the train between a and b. give your answers in kilometers per hour.

Which is it a characteristic of the animal kingdom? a. they include both vertebrates and invertebrates b. their skin is covered with hair or fur c. they are heterotrophs d. they are eukaryotic

Which statements about the fluid mosaic structure of a membrane are correct? select the three correct statements. which statements about the fluid mosaic structure of a membrane are correct? select the three correct statements. the framework of a membrane is a bilayer of phospholipids with their hydrophilic heads facing the aqueous environment inside and outside of the cell and their hydrophobic tails clustered in the center. because membranes are fluid, membrane proteins and phospholipids can drift about in the membrane. the diverse proteins found in and attached to membranes perform many important functions. the kinky tails of some proteins keep the membrane fluid by preventing the component molecules from packing solidly together. membranes include a mosaic, or mix, of carbohydrates embedded in a phospholipid bilayer.

Identify the composition of oceanic and continental crystal rocks. in a model of earth’s interior, where would these rocks appear?