What is the secondary level of structure in proteins?

Question#29: why does the tropical ocean have a greater temperature range than the temperate ocean?

In tomato plants, mendel found that the allele for smooth seeds (s) is dominant, while the allele for wrinkled seeds (s) is recessive. which of these punnett squares shows crosses between two plants heterozygous for smooth seeds? i need this to be answered as soon as ! sry the picture is bad quality

Organize the following objects from lowest volume to highest volume