1.
Identify the type of precipitation that is not one of the main categories.
snow
sleet
<em>drizzle</em> ✓
hail
- It's a a mild fall of drops condensed hence , it's not a main category
- The four main categories are snow ,rain ,sleet & hail
2.
Which device is used to measure rainfall?
measuring stick
rain gauge ✓
rain meter
rain stick
- It calculates the precepated rain in a time period per unit area
3.
Which device is used to measure snow?
rain gauge
measuring stick ✓
measuring gauge
rain meter
- A simple measuring stick can measure the thickness of snow
Stone tools we’re first used around 3,300 BCE
Answer:
Option D
Explanation:
Cyanobacteria preserve its photosynthetic pigments in the thylakoids which allows masking of green of chlorophyll a and other accessory pigment i.e phycobiliproteins (phycocyanin, allophycocyanin and phycoerythrin).
Chlorophyll a is mainly responsible for harvesting light for photosynthesis. Phycocyanin is blue in color, allophycocyanin is blue in color and phycoerythrine is red in color. These together harvest light in the green, yellow and orange part of the spectrum which cannot be used by other phytoplankton species
Hence, option D is correct
