There are many different types of scientific investigations. which of the following forms requires the identification and control of variables?
a.
model-building
b.
observational field studies
c.
collection of specimens
d.
laboratory experiments

Where would you most likely not find an alpine glacier? the himalayas the rockies the andes flat areas of antarctica

Some technological solutions to problems like global warming meet the specific needs and situations of local communities. an example from india involves converting the solid waste from cattle into clean-burning fuel for cooking. this reduces the amount of greenhouse gases, specifically methane and carbon dioxide, released into the environment from wood fires. when evaluating the feasibility of implementing this solution, computer models are used to weigh costs against benefits. what factor is least likely to impact the decision on adopting this technology?

The idea that all living things are made up of cells is considered scientific law. this means the idea is an emerging scientific idea that has a logical explanation. has been tested with similar results at least twice. is supported by scientific consensus and a large amount of evidence. has been rejected only once by the scientific community