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pav-90 [236]
3 years ago
8

Please help me please

Biology
1 answer:
Ivenika [448]3 years ago
3 0

Answer:

D

Explanation:

it has to be D because its talking about "how does a volcanic ash affect water systems"

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Halobacterium has a photosynthetic membrane that appears purple. its photosynthetic action spectrum is the inverse of the action
a_sh-v [17]

Yellow- Green Wavelength of light at peak absorption of 565nm.

Halobacterium is known to be a member of Archaea and they thrive in very salty environment such as Great Salt lake and Dead Sea. Halobacteria under the process of photosynthesis with chlorophyll and they make their ATP from the sunlight using bacteriorhodopsin and halorhodopsin as photosynthetic pigments.

However, photosensory pigements found in Halabacterium were:

1. photosystem 565 which is used to respond to yellow –green light in other for cell to find optimum conditions for ATP synthesis and photophosphorylation and they have peak absorbtion at 565nm.

2. Photosystem 370 nm appears to be responsible for the protective avoidance of blue/UV light.

6 0
3 years ago
What is a major problem of human reliance on nonrenewable energy sources?
enyata [817]

The correct answers are:

A) Nonrenewable resources create terrible pollution problems;

D) Once nonrenewable resources are used, they cannot be replaced, so we are not able to acquire more;

The nonrenewable resources are by far the most used resources across the globe. From side they are relatively cheap and are very efficient, but from the other side they are the biggest polluters and their reserves are becoming less and less. Being the biggest polluters, this resources create a lot of problems like the bad air quality, acid rains, and the climate change. Also, this resources are limited, so once the reserves of them are spent there will be no more of them, thus the humanity will be in big trouble if a proper solution is not found until then.

7 0
3 years ago
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In creating a model of our living planet, scientists need to consider four major Earth systems. Briefly describe these four syst
algol [13]

Answer:

the geosphere, atmosphere, hydrosphere and biosphere.

Four spheres are all independent parts of a system. The spheres interact with each other, and a change in one area can cause a change in another. Plants (biosphere) draw water (hydrosphere) and nutrients from the soil and release water vapor into the atmosphere. The biosphere contains all the planet's living things.

Explanation:

hope this helps 8D

3 0
3 years ago
It’s silly to think about a plant sitting down at the dinner table and enjoying a meal, but plants need food just like all of us
SashulF [63]

Answer:

1 a 2 b those are the answers to the questions

8 0
3 years ago
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Please help! will give brainist when i can :D
Radda [10]

Answer:

Water separates polar molecules from each other by forming hydrogen bonds.

Explanation:

A polar molecule is a molecule in which the distribution of electrons between the covalently bonded atoms is not even. This means that one end of the bond is slightly more positively charged, while the other end is slightly more negatively charged.

An example of a polar molecule is a molecule of water (H2O). Substances with similar chemical characteristics dissolve in each other. This means that polar molecules will dissolve in water. The partially negative part of a water molecule will interact with the partially positive part of another polar molecule. This results in the formation of hydrogen bonds, which occur when a hydrogen atom is located between a pair of other atoms that have a high affinity for electrons.

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