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Kazeer [188]
3 years ago
13

Of the chemicals that fall under the toxic substances control act, ________% have been thoroughly tested for toxicity and ______

__ have been tested for endocrine, nervous, or immune system damage.
Biology
1 answer:
givi [52]3 years ago
7 0
10 percent and for the second blank the answer should be none 

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Why do scientist need to understand how a disease is transmitted​
loris [4]

Answer:

Isn't it obvious? The more you know about the pathogen (anything) the better targeted solutions can be created to avoid spreading.

Explanation:

4 0
3 years ago
Several groups of protists have variable modes of nutrition: Some species are photoautotrophs, whereas close relatives are heter
Radda [10]

Answer:

The endosymbiotic theory

Explanation:

Protists are the multicellular organisms which possess characteristics of both the prokaryotes and eukaryotes.

The protist can derive nutrition by either heterotrophic mode or photoautotrophic mode. This variation could exist within the same genus and same species.

This variation could be explained with the endosymbiotic origin of the organisms as some species could engulf the photosynthetic bacteria whereas some could have engulfed the chemosynthetic bacteria.

This can be observed in the green and red algae which depend on a different mode of nutrition belonging to the same group.

Thus, the endosymbiotic theory is correct.

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3 years ago
WILL GIVE A BRAINLEST
ivolga24 [154]
They will run out. Because nonrenewable means it can't be renewed until like millions of year or so. Hope this helps and You're Welcome! :3
3 0
3 years ago
Read 2 more answers
PLEASE HELP I NEED IT ASAP
Brrunno [24]
Money, wealth, and prestige
6 0
3 years ago
Zinc, an essential trace element for most organisms, is present in the active site of the enzyme carboxypeptidase. The zinc most
spayn [35]

Answer:

D) cofactor necessary for enzyme activity.

Explanation:

Carboxypeptidase is an enzyme found in the digestive system whose function is to hydrolyze a peptide bond in the terminal carbon of a protein. Said enzyme contains a zinc atom in its active site and when losing a zinc atom it would lead to loss of the activity of the enzyme, making it of great importance for the activity of the enzyme.

6 0
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