Only one acidic because litmus turns blue in bases :D
Light excites the electrons in chlorophyll a molecules of photosystem 1. As these electrons move to another primary electron receptor, electrons from photosystem 2 replace them.
Therefore the answer is FROM PHOTOSYSTEM 2.
Answer:
10 B and 11 C thats what I got
Heterotrophs are consumers, cannot make their own foods, and have some of them have the capacity to consume autotrophs. Hence, they are not at the base of most food webs.
Heterotrophs are organisms that have no capacity to manufacture their own foods, unlike autotrophs.
They depend on other organisms for their foods. Hence, they are known as consumers, unlike autotrophs that are called producers.
Heterotrophs are of different types:
- Herbivores: those that consume autotrophs only
- Carnivores: those that consume meat only
- Omnivores: those that consume both autotrophs and meat.
Thus, heterotrophs do not occupy the base of food webs. The base of food webs are mostly occupied by autotrophs, the producers.
More on heterotrophs can be found here: brainly.com/question/13420317?referrer=searchResults
Answer: B costal erosion causes the beach to wear away
