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tatuchka [14]
3 years ago
14

01:04 An atom of carbon (C) forms covalent bonds with two atoms of axygen (O) to form carbon electrons of these atoms rearranged

to form the bonds? dioxide. How are the valence
Biology
1 answer:
tatuchka [14]3 years ago
5 0

My answer will be that the valence of the Carbon atom is (+4) and that of each Oxygen atom is (-2). The CO2 molecule is formed by covalent bonds, in other words: C (+4) + O2 (-4) = 0.

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Match the givin changes in the ecosystem to their causes
poizon [28]

Answer:

The correct answers are:

1. Greenhouse gases: Earth's heat is kept from going away.

Greenhouse gases, particularly CO2 and methane, have properties that allow them to trap heat in the atmosphere. This means that the more of these gases there are in the air, it will be hotter on Earth.

2. Chemicals released into the river—unfit for human consumption.

The chemicals released into rivers pollute the water, making it unfit for human consumption. There are only a few places in the world where there is enough freshwater to go around, so the fact that so many rivers have been poisoned is very worrying.

3. Excessive agricultural land use—forest fragmentation.

People cut down the trees so that there is more land that can be used for farming, As a result of this process, forests are being destroyed to the point of total devastation, and it is likely that this percentage will rise in the coming years as things continue.

<em></em>

<em>I hope this helps you</em>

<em>:)</em>

4 0
2 years ago
If all the arrows point towards the oragnism on a food web then it must be a ?
inna [77]
Predator
Because they are at the top they eat everything so when the arrows point towards them on the web it means they are essentially eating them because like a food web this organism is on top and the other prey are on the bottom
3 0
3 years ago
true or false Science is a collection of facts that does not evolve. We have gained all the knowledge we can from science.
Burka [1]

Answer:

false

Explanation:

with new knowledge , science evolves.

6 0
1 year ago
Question 1 of 34
Ivenika [448]

Answer:

A) They occupy different niches due to competition for food.

Explanation:

According to Joseph Grinnel - "An ecological niche is the distributional unit within which each species is held by its structural and instinctive limitation. No two species in the same general territory can occupy the same ecological niche". Hence, the two lizard species have separated their trophic niches i.e. the ecological niche in which they feed, as they both have common preys that is the insects. this will avoid competition and would provide enough food for both the species.

3 0
3 years ago
In a pea plant that is heterozygous for seed color what
asambeis [7]

Answer:

1/4.

Explanation:

The Mendel is known as father of genetics. He explained the concept of dominance, law of segregation and law of independent assortment while working on the pea plant.

The cross between the heterozygous seed color (Ss × Ss), result in the 3/4 dominant phenotype ( SS, Ss and Ss ) and 1/4 recessive phenotype with alleles ss.

Ss   ×   Ss

progeny obtained are SS, Ss, Ss and ss.

Thus, the correct answer is option (3).

3 0
3 years ago
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