Many people die whilst they are waiting for an organ transplant. Why is this?

Will someone me with this.. specialized cells which perform a particular function form: tissues organs or organism

Are the earth's ocean floor and continents the same age geologically? why or why not?

In tomato plants, mendel found that the allele for smooth seeds (s) is dominant, while the allele for wrinkled seeds (s) is recessive. which of these punnett squares shows crosses between two plants heterozygous for smooth seeds? i need this to be answered as soon as ! sry the picture is bad quality