A, b, and c are all correct.
take for example finches off of the galapagos islands. they vary from island to island, yet are still the same bird. on one island they have bigger, more durable and stronger beaks, because that island has many nuts to crack open and eat. on another island, they have thin ling beaks, ideal for pecking at insects in the grass on tree bark. evolution is literally survival of the ifttest, where those equipped best will live and those without means to fight for life will die off, leaving those most capable of reproduction and passing down genes.
I know they carry diseases which can harm or kill the animal it is attached to. These diseases can taint the meat of the animal so it wouldn't be wise to eat it which stinks if the animal is bread for eating. They can also irritate the skin and cause rashes, or even eat the flesh of the animal away.
B.cyanobacteria
hope it is correct
Answer:
Hi there! Hopefully this helps answer your question!
Explanation:
Muscle cramps are painful contractions or spasms of a muscle usually caused by fatigue, water loss, or by inadequate stretching, conditioning, and/or warm-up during soccer practice or competition.
Positive feedback loops enhance or amplify changes and this moves a system away from its equilibrium state and make it more unstable.
