Explanation:
To swim, they move their tails up and down, rather than back and forth as fishes do. This is because whales evolved from walking land mammals whose backbones did not naturally bend side to side, but up and down. ... Whales do the same thing as they swim, showing their ancient terrestrial heritage.
Cetaceans are fully aquatic marine mammals belonging to the order Artiodactyla, and branched off from other artiodactyls around 50 mya (million years ago). Cetaceans are thought to have evolved during the Eocene or earlier, sharing a closest common ancestor with hippopotamuses.
Transition from breast or formula feeding until solid food is vital for child's development. Children can learn skills while eating solid food and will be ready to try mashed cooked beans around 7-10 months old. For a 3 year old toddler,it is recommended around 3 tablespoons.
Answer:
YES!!!!
Explanation:
It's correct because this is one of 10 steps invloving the bacteria state The process in natural selection has resulted in this evolution of such resistance dut to the idea of getting a mutation (adaptation) in which It helped the bacteria to be able to survive better than others kinds of bacteria. So others may die off, but this bacteria copies itself off, and now the whole species may be resistant to the antibiotic, causing a difficulty in using them to trea
