A student creates a model of the human arm from wood sticks and strings. pulling the string causes the lower wooden stick to rise, as shown in the diagram. how does the model relate to how the body structure allow the body to move?

Explain why ecosystem diversity results in species diversity in a healthy biosphere

The source of energy shown in the image is (renewable, non renewable, polluting) a drawback of building a dam is that (it will destroy ecosystems, it requires fossil fuels, it won’t be useful for irrigation)

In cattle a single gene with two alleles determines fur color the fur can be red white or roan roan fur has both red and white hair which of the following statements is true a the allele for roan fur color is dominant over red and white fur color b the allele for red fur color is dominant over white and roan fur color c the roan and white alleles are expressed independently of the other d the red and white alleles are expressed independently of each other