A disadvantage of being multi-cellular is how long it takes to reproduce. For single-celled organisms, it's sometimes as simple a splitting in two, but multi cellular organisms, like humans, have to wait 9 months until they see their child.
Another disadvantage is it take more energy to do things. Some bacteria have flagella that they move like a tail that drives them forward. Multi-cellular organisms have to intake calories that are burned when we move and we have to keep intaking them to perform tasks.
Answer:
Originally developed as an insecticide, it became infamous for its environmental impacts. DDT was first synthesized in 1874 by the Austrian chemist Othmar Zeidler. DDT's insecticidal action was discovered by the Swiss chemist Paul Hermann Müller in 1939.
Answer:
common ancestor.
Explanation:
when two groups of organism are related it means they share a common ancestry but may be they are not a direct parent but can relate to there far back generation.
Evidence from fossil's records are used to study that today how much organisms have changed themselves according to the environmental changes on earth. DNA and genetic codes mainly shows the shared common ancestry.
Answer:
Organic molecules produced from spontaneous synthesis or from meteorites
Explanation:
I say D, because there are certain states that have national parks and a large tree area.
