Answer:
The options are
A) they may affect several populations in an ecosystem
B) they cannot be caused by human activity
C) they affect food chains but not food webs
D) They have no effect on living organisms in an ecosystem him
The answer is A) they may affect several populations in an ecosystem
Explanation:
Environmental changes include deforestation and climate changes. Organisms depend on their habitat and climatic conditions for their survival because it determines their food availability too.
When environmental change occurs they may affect several populations in an ecosystem.
Answer:
True and The respiratory system is a biological system consisting of specific organs and structures used for gas exchange in animals and plants
Heat radiation.
This is the form of heat transfer that doesn’t need a medium to transfer through.
That’s how heat from the sun gets to earth, even though empty space is very cold.
C. cell wall. This discovery was made by Robert Hooke upon studying the honeycomb like structure of cork and compared it to the dead appearance of the cell wall.
