How much of the oxygen we breathe is produced by pytoplankton?
20%, 35%, 50%, 7%
I think the answer is 50%. Am I correct.
All of the following are adaptations some phytoplankton have for floating except?
1) Cells have large cavity in the center
2) spines
3) reducing surface area
4)stores of oil and fat
I think the answer is number 4. Am I correct?
I hope so, that's what I'm putting.
One of the benefits of phytoplankton is that it removes excess carbon dioxide from the atmosphere. What human activities contribute the most to increasing carbon dioxide levels?
To determine the correct answers to these questions, let's break down each question and go through the process of finding the answers.
Question 1: How much of the oxygen we breathe is produced by pytoplankton?
To find the answer to this question, we need to consider the different options provided: 20%, 35%, 50%, and 7%. The correct answer is 50%.
Pytoplankton are responsible for a significant amount of the oxygen production on Earth through a process called photosynthesis. They account for approximately 50% of the oxygen we breathe. This estimate may vary slightly depending on different studies and sources, but 50% is generally accepted.
So, your answer of 50% is correct.
Question 2: All of the following are adaptations some phytoplankton have for floating except?
The options provided are:
1) Cells have a large cavity in the center
2) Spines
3) Reducing surface area
4) Stores of oil and fat
To determine the correct answer, we need to identify which adaptation is not associated with phytoplankton floating.
Option 1: Cells have a large cavity in the center
This adaptation, known as vacuolation, helps provide buoyancy and aids in floating.
Option 2: Spines
Some phytoplankton have spines that help increase their surface area and assist in floating.
Option 3: Reducing surface area
Phytoplankton may reduce their surface area by altering their shape or having appendages, which helps promote buoyancy and prevents sinking.
Option 4: Stores of oil and fat
This adaptation is not commonly associated with phytoplankton floating. Oil and fat stores are typically observed in marine animals to aid in buoyancy and insulation.
By examining each option, we can conclude that option 4, stores of oil and fat, is the correct answer. It is not among the adaptations some phytoplankton have for floating.
Therefore, your answer of number 4 is correct.