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mina [271]
3 years ago
14

The life expectancy in the US increased more than 30% from 1930 to 2015 which factor could have contributed to this increase a b

etter medical facilities and treatments be decreased Farmland C increased food insecurity D refusal of vaccines
Biology
1 answer:
goblinko [34]3 years ago
3 0
A better medical facilities and treatments.
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Trophic level

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Explanation:

All living organisms require energy for their life processes, which they obtain by taken in food. In an ecosystem, this food is derived when organisms feed on each other. This process that eventually leads to a flow of energy within organisms is called FOOD CHAIN.

A food chain or food web always begins with a unique set of organisms called PRODUCERS. Producers are autotrophs capable of harvesting light energy from the sun and use it to produce their food (chemical) in a process called PHOTOSYNTHESIS. Other organisms called HETEROTROPHS feed on these producers to derive energy. In ecology, they are called CONSUMERS. Other consumers feed on the previous ones also to get energy.

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3 years ago
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dangina [55]

✧・゚: *✧・゚:*    *:・゚✧*:・゚✧

                  Hello!

✧・゚: *✧・゚:*    *:・゚✧*:・゚✧

❖ The correct answer choice is removal of electrons from chlorophyll molecules.

~ ʜᴏᴘᴇ ᴛʜɪꜱ ʜᴇʟᴘꜱ! :) ♡

~ ᴄʟᴏᴜᴛᴀɴꜱᴡᴇʀꜱ

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4 years ago
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Blababa [14]
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When the moon gets between the earth
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