Dolphins used to be land dwelling animals millions of years ago. this is evidence for which characteristic of life?

a all organisms evolve over time
b all organisms grow and develop
c all organism have dna as their genetic code
d all organisms reproduce

How many copies of each chromosomes should be present in each of the 4 final haploid versions of gamete?

Agroup of students is studying convection currents. they fill two identical balloons with the same amount of helium. one balloon is placed in a freezer and the other in an area with warm air. after 10 minutes, the balloons are released from a height of 1 meter. which of the following do the students most likely observe? question 8 options: the cold balloon expands and rises. the warm balloon shrinks and sinks. the balloons rise at the same rate. both balloons are the same size. the ballons both rise. the cold ballon is larger than the warm balloon. the warm balloon expands and rises. the cold balloon shrinks and sinks.

Explain the significance of thesaurus geographicus