Johnny likes to watch the birds that visit his birdfeeder. His favorite bird is the cardinal. How could Johnny
determine which kind of birdseed cardinals prefer?
Explain your answer in detail.
Experiment-
Variables-
Test-
Hypothesis-
Independent and dependent-
Data-

How is the male reproductive system different from other body systems? it isn’t necessary to vital signs. it monitors other body systems, and adjusts if necessary. it transports items from one system to another. it is the only system that produces hormones in the male.

Did you know that a blue wales tongue weighs more than an elephant?

Which statements best describe the differences or similarities between a comparative investigation and an experimental investigation? check all that apply. experimental investigations are best for showing cause-and-effect relationships, while comparative investigations do not necessarily show this type of relationship. comparative investigations are often impractical and unrealistic, while experimental investigations are the most practical and realistic kinds of investigations. comparative investigations allow for the use of a wide range of variables but do not have a control group, while experimental investigations involve variables that can be controlled. both experimental investigations and comparative investigations are designed to answer scientific questions. both experimental investigations and comparative investigations focus on making observations rather than collecting new data.