The position of the sun in the sky
B: Mudrock I’m pretty sure
Answer:
9.) <em>Humpback Whales</em>
10.) <em>Phytoplankton.</em>
11.) <em>Sotronger upwelling winds</em>
Explanation:
9.) A primary consumer feeds on primary producers, of all the options given Humpback Whales, are the only ones meeting the criteria in the options given since they feed with plankton (a primary producer).
10.) Phytoplankton are the base of the Southern Antarctic Ocean trophic chain. In the nutrient-rich upwelling zone waters, they can reach huge blossoms and are far more common than other forms of zooplankton in this zone.
11.) The productivity of this ecosystem is influenced by the seasonal cycle of the upwelling winds, these peak during the months of December and January, carrying more nutrients and allowing trophic networks to work more efficiently and actively allowing for more productivity.
The primary reason for low agricultural productivity in Africa is that Africa lacks infrastructure and uses technology sparingly.
<h3>What is agricultural productivity?</h3>
The ratio of agricultural outputs to inputs is used to calculate agricultural productivity. This productivity is defined to as crop yield, the variety of products makes measuring overall agricultural output difficult.
Therefore, the primary reason for Africa's low agricultural productivity is a lack of infrastructure and a conservative use of technology.
Learn more about the agricultural productivity, refer to:
brainly.com/question/2760047
#SPJ1
