Explain why an area with extreme temperatures like one in the Arctic would be resistant to invasion by a biotic disturbance.

Why do bacteria thrive even in hostile environments

Suppose you have monohybrid pea plants in your garden and find that they produce round seed to wrinkled seeds in the ratio of 3: 1. if the allele are designated (r & r) receptively. what is the probable genotypes of the round seeds which produced f 1 ? rr & rr rr only rr & rr rr only rr only

Which of the following organisms are capable of self-fertilization? a.plants b.tigers c.humans