What conclusion does the fossil record support? a. species have changed over time. b. traits acquired during a lifetime are passed to offspring. c. earth's organisms have not changed over time. d. all of earth's organisms were formed at the same time.

Which of the following descriptions of proteins are true? i. proteins can have different sequences of amino acids. ii. proteins can have different shapes. iii. proteins can have different numbers of amino acids. a. only i and ii are true. b. only ii and iii are true. c. only i and iii are true. d. i and ii and iii are all true. e. none are true statements

Each trait of a plant is determined a. an allele b. one gene c. a pair of genes d. one dominant gene

In the african savanna,more wildebeests are born than the environment can support. which is most likely to happen over a period of years as a result