50% it said i need more words hope this helps have a nice day.
Explanation:
with in the food chain energy can be passed and transferred from one organism to an other. plant harvest their energy from Sun during photosynthesis this energy can then be passed from one organism to another in the food chain. the organism that opens energy from sunlight is called the producer .
Answer:
Life expectancy has steadily risen.
People live longer lives.
Parasitism is when one organism benefits at the cost of it's host. Like fleas on a dog or intestinal parasites to livestock. Fleas and intestinal worms get food and a nice place to livr, while the dogs and the livestock are being leeched off of and malnourished.
Commensalism is when one organism benefits, while the host is left unharmed- but also doesn't really get anything in return, unlike mutualism. Like a shark and remoras (those fish with suction-cup heads & hitchhike). Sharks aren't hurt, but the remoras get free transportation and access to food scraps.
Hope this helps!
Answer:
Organ
Explanation:
Cardiac muscle causes movement in the heart. The heart is an organ.