<span>D. Multiple cropping</span>
<span>Lava is molten rock expelled by a volcano during an eruption. The path magma moves is called the lava flow.</span>
Rough er= Rough endoplasmic reticulum ,has ribosomes on the surface ,<span>membranes that contain ribosomes and helps to make proteins </span>
Smooth er= Smooth endoplasmic reticulum,no ribosomes on surface
Answer:
survive in their environment
Explanation:
According to Darwin's theory of evolution, natural selection is the main mechanism. Darwin explains that organisms that have heritable traits that help them survive and reproduce, will be favorable by natural selection. Those favorable traits will enable organism to better adapt to their environment and to pass more genes on to the next generation (offspring).
Organisms adapt to their environment by changing their behavior, structural traits or physiology as a response to environmental change, so that they become well suited to it.
