<span>chordates are the animals which are in phylum chordata and have backbone
</span>The trait that is ancestral to all chordates is <span>a vertebral column that is backbone
so option D is correct
hope it helps</span>
This is only 5 points and 2 is the answer
DNA sequence can be altered by the process called as mutation. Mutation of DNA sequence can have a positive or negative effect on an organism and it entirely depends on the point and type of mutation that has occurred on the DNA sequences.
Mutations can be point mutation where single nucleotide base gets altered or deletion where a base pair gets deleted from the DNA sequences and many more. Mutation has driven the evolution of the organism.
Answer:
glucose is the food for producers. they make their own food with the photonic energy from the sun. this energy is then passed to primart consumer, then secondary consumers, then tertiary consumers. energy decreases as it climbs the food pyramid. only 10 percent of the previous tier is carried onto the next tier.
for example if plants had 10,000 kilocalories, grasshoppers would get 1,000 kilocalories,
frogs would get 100 kilocalories,
and snakes would get 10 kilocalories.
kilocalories are a unit of energy.
i hope this helped! have a nice day
