Characteristics typical of annelids are segmentation, open circulation, and nephridia

segmentation, closed circulation, and nephridia.

no anus, nephridia, and coelom

What type of cell is produced after fertilization occurs and the gametes combines ?

Researchers randomly divide participants into groups. each group takes a different amount of omega-3 fatty acid supplements daily for a month. one group receives a placebo. the researchers measure the impact on cholesterol levels in the blood. what is the purpose of random assignment in this experiment? a, to produce treatment groups with similar characteristics b, to ensure that all people with high cholesterol have an equal chance of being selected for the study c, to increase the accuracy of the research results and prevent skewness in the data

What characteristic make legumes a good food source for food insecure populations