According to malthus, what factors limited population growth?

Why does the skin of your finger shrink when you wash clothes for a long time?

What was the land like over 500 million years ago? what was under the sea?

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