The difference between a stone-tool mark and a tooth mark is that:
a. tooth marks leave smooth grooves, and stone-tool marks leave many parallel grooves.
b. tooth marks occur along the entire shaft of the bone, but stone-tool marks occur only at the end of the bone.
c. stone-tool marks are crooked because hominins were not skilled at using stone tools.
d. stone-tool marks contain stone flake residue.

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?

Why has two different alleles for the same trait?

This rapid change in species that rarely leaves behind fossil evidence is referred to as