Ascientists wishes to determine whether or not a marine ecosystem underwent primary or secondary succession in the past. what evidence would be most useful for making this determination?
unearth the fossil history of the ecosystem to find producers that can live on rock.
use radiocarbon dating to determine the age of the rock underlying the ecosystem.
determine the average age of all producer species in the ecosystem at the present time.
determine the chemical composition of the water in the ecosystem at the present time.

Match the following terms and definitions. 1. transcription when genes are neither dominant nor recessive and display a blending of traits in the phenotype 2. translation converting the genetic code into the language of proteins 3. monohybrid cross genes that are carried on the x chromosome 4. incomplete dominance the transfer of genetic code from dna to an rna molecule 5. sex-linked genes the breeding of two organisms which differ in a single trait

What was dr. willem johan kolff’s first step in using the scientific process to invent the hemodialysis machine? he built the machine and tried it with various patients, collecting data about its effectiveness. when a patient’s kidneys failed, he wondered if it would be possible to perform kidney functions with an external machine. he researched and collected data about numerous patients who exhibited symptoms of kidney failure. he drew conclusions from studies of various symptoms of kidney failure, and drew a design for the ideal external blood-processing machine.

What is the inability of an individual or a society to achieve a minimum standard of living known as ?