Sperm and eggs are types of sex cells called

Invasive species are one of the major threats to biodiversity. these species multiply quickly and compete with native species for food, sunlight, spac and other resources. on the map, determine the area where native species will have limited resources available to them due to invasion threat from invasive species threat very low low medium high very high

Several billion years ago which gas was the least prevailant in the atmosphere

People with one sickle cell allele are not likely to get malaria. what is this an example of?