What are consumers? also, please explain what are primary consumers and secondary consumers and how they help the ecosystem?

Afarmer has applied a pesticide to control a pest population that is affecting her crops. the pest population has reacted as shown below. which best describes the process that the pest population has experienced due to this environmental change? a genetic diversity b natural selection c natural resistance d genetic resistance

During which phase does earth see more than half of the moon's surface? 1)first quarter2)third quarter3)waxing gibbous4)waning crescent

All individuals have two alleles for a given trait. according to mendel's these alleles are passed down one each from both mother and father.