Explain the evolution of heart in vertebrates SOMEONE HELP PLZZZ
IM RLLY NOT UNDERSTANDING THIS SO PLZ EXPLAIN WELL AND THANK YOU

What are the types of genetic recombination

Chicken pox and hepatitis are bacterial diseases. true or false?

What is the best conclusion based on this data? the hypothesis was not supported because the data indicated that fertilizing plants does not improve plant growth. the hypothesis was supported; to get the best growth, use 5 milliliters of fertilizer per plant. the hypothesis was not supported; the data indicated that too much fertilizer can inhibit plant growth. the hypothesis was supported; to get the best growth, use 15 milliliters of fertilizer per plant.