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dmitriy555 [2]
3 years ago
11

Chemical bonding please help!

Biology
1 answer:
olga_2 [115]3 years ago
8 0

Answer:

A chemical bond is a lasting attraction between atoms, ions or molecules that enables the formation of chemical compounds. The bond may result from the electrostatic force of attraction between oppositely charged ions as in ionic bonds or through the sharing of electrons as in covalent bonds.

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Beyond the organism, what is the correct order of the levels within the environment
Luba_88 [7]

<u>levels of organization </u>

from the smallest units of life to the largest units of the environment :

organelles >>> cells >>> tissues >>> organs >>> organ systems >>> organisms >>> populations >>> communities >>> ecosystems >>> biosphere

8 0
3 years ago
Over time weeds have become resistant to pesticides. Which process explains how pesticide resistance developed? A. natural selec
Mice21 [21]
A. Natural Selection.  This is because the weeds that are not resistant to it die out before they can reproduce, but the resistant ones grow to maturity and then reproduce, passing down the resistance gene.  Over time, the resistance gene would become a normal thing in weeds, while the non-resistant gene would not exist anyone, since the gene could not be passed on.
6 0
3 years ago
Are all living things organisms or are all organisms living things?​
castortr0y [4]

Answer:

No viruses are not considered as living organisms, until they enter the body of the host

6 0
2 years ago
Read 2 more answers
All northern elephant seals come from a very small genetic pool. This is because in the 1890s a large number of them were very q
Mashcka [7]

Answer:

b. the bottleneck effect.

Explanation:

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The Founder effect has its similarities (in terms of the resulting reduced genetic pool) with the bottleneck effect, BUT it occurs when a new colony is started by a few members of the original population.

The Hardy-Weinberg equilibrium is a principle in population genetics that states that the genetic variation in a population will remain constant from one generation to the next IF certain conditions are present (no migration, aleatory mating, among others), so this is not the answer.

Genetic drift (refers to the change in the frequency of an existing gene variant in a population due to random sampling of organisms, so it is not the answer.

7 0
3 years ago
C. Where does the progesterone come from?​
SOVA2 [1]
Progesterone is a steroid hormone that is usually made by the adrenal cortex along with the gonads, which consists of the ovaries and testes
hope this helps
4 0
3 years ago
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